Fountain

Fountain
x = 19, y = 15, rule = B3/S23 9bo2$3b2obo5bob2o$3bo5bo5bo$4b2ob2ob2ob2o2$6b2o3b2o$2o15b2o$o2bo3bobob o3bo2bo$b3ob9ob3o$4bo4bo4bo$3b2o9b2o$3bo11bo$5bo7bo$4b2o7b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 1 THUMBSIZE 3 ZOOM 18 HEIGHT 500 LOOP 4 ]]
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Pattern type	Oscillator
Number of cells	63
Bounding box	19 × 15
Period	4
Mod	4
Heat	38
Volatility	0.68
Strict volatility	0.68
Discovered by	Dean Hickerson
Year of discovery	1994
Rules Outer-totalistic rules B3/S23 – B38/S238 # of rules 22 = 4 Isotropic rules B3-a/S23-cy – B2n34et5ckry6-an7c8/S234ckqw5cejkq6-ck7c8
Pattern files Plaintext fountain.cells RLE fountain.rle
Identifiers apgcode xp4_x356k3p1p3k653z354mi419939914im453zx146y3641

Fountain is a period-4 oscillator that was found on November 28, 1994 by Dean Hickerson and named by Bill Gosper.

Variants

x = 15, y = 13, rule = B3/S23 7bo2$3b2o5b2o$b2o4bo4b2o$5b2ob2o$bobo7bobo$bo2bobobobo2bo$5obobob5o$o 4bo3bo4bo$b3obobobob3o$3bob2obo2bo$8bobo$8b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 4 THUMBSIZE 2 ZOOM 16 AUTOSTART ]] A smaller fountain that is usually interchangeable with the form in the infobox, found by David Eppstein on May 21, 2000. It does not work with the p24 below, though (click above to open LifeViewer)

x = 17, y = 15, rule = B3/S23 8bo2$5bo5bo$2b2o4bo4b2o$bob2ob2ob2ob2obo$bo13bo$4bo7bo$bo2bo7bo2bo$4bobo3bobo$bob3obobob3obo$o15bo$3o2bobobobo2b3o$3bobobobobobo$2obo2b2ob2o2bob2o$ob2o9b2obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 4 THUMBSIZE 2 ZOOM 16 AUTOSTART ]] A two-cell-thinner fountain with the same height and higher clearance and population. (click above to open LifeViewer)

Hasslings

The fountain can hassle a traffic light in p24 with many variations, two of the most basic of which are shown here.

x = 39, y = 31, rule = B3/S23 32b2o$32bo2bo2$32bo2bo$31bo2bo$31bobo$11b2o19bo$11b2obo$15bo16b2o$12bo 19b2o$13bob2o$15b2o2$7b3o17b3o$7bobo17bobo$7b3o17b3o3$3b2o2b5o2b2o7b2o 2b5o2b2o$3bobobo3bobobo7bobobo3bobobo$4b3o5b3o9b3o5b3o$8bobo17bobo$6bo bobobo13bobobobo$2o4b7o4b2ob2o4b7o4b2o$o2b2o4bo4b2o2bobo2b2o4bo4b2o2bo $b3obo7bob3o3b3obo7bob3o$7b2ob2o15b2ob2o$3b2o9b2o7b2o9b2o$3bo11bo7bo 11bo$4bo9bo9bo9bo$3b2o9b2o7b2o9b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 8 THUMBSIZE 2 ZOOM 8 AUTOSTART ]]

(click above to open LifeViewer)

This is used in a reaction with the p45 pi-heptomino hassler in the smallest period-360 glider gun on Catagolue as of March 2024.

x = 46, y = 29, rule = B3/S23 41b2ob2o$35b2o3bobobo$34bob5obo2bo$19b2o14bob2ob2ob3o$15b4o4b2o10bobo 4bo$15b3ob2o2b2o8b3o4bob2o$20bo12b3o4b2o2bo$32b2o6b5o$26bo5b3o$9b2o15b obo3b2o6b5o$9b2o15bo6b3o4b2o2bo$9b2o22b3o4bob2o$10bo24bobo4bo$9b3o23b ob2ob2ob3o$8b2ob2o21bob5obo2bo$7b2o3b2o21b2o3bobobo$8b2ob2o28b2ob2o2$ bo$obo$2o2$7bo6bo$6b2o6b2o$5b3o6b3o$6b2o6b2o$7bo6bo25bo$41bo$39b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 8 THUMBSIZE 2 ZOOM 8 AUTOSTART ]]

(click above to open LifeViewer)

Robert Wainwright found that when hassled by molds instead, the traffic light produces a blinker, acting as a factory, two copies of which may perturb a beehive to act as a p24 heavyweight emulator.

x = 34, y = 25, rule = B3/S23 6bo20bo$4b2obo18bob2o$3bo26bo$2bobo2bo18bo2bobo$2bo2bo22bo2bo$3b2o4b3o10b3o4b2o$16b2o$10bo4bo2bo4bo$16b2o3$8b3o12b3o$3b2ob7ob2o2b2ob7ob2o$3bo3bobobo3bo2bo3bobobo3bo$4b4o3b4o4b4o3b4o$6bo5bo8bo5bo$6bo5bo8bo5bo$2o3b2o5b2o6b2o5b2o3b2o$o2b5obob5o2b5obob5o2bo$b3o4b3o4b4o4b3o4b3o2$3b2o9b2o2b2o9b2o$3bo11bo2bo11bo$4bo9bo4bo9bo$3b2o9b2o2b2o9b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 8 HEIGHT 410 THUMBSIZE 2 ZOOM 12 AUTOSTART ]]

(click above to open LifeViewer)

See also

• Filter
• Superfountain

External links

• Fountain at the Life Lexicon
• Fountain at Adam P. Goucher's Catagolue