Eater/block frob

Eater/block frob
x = 10, y = 10, rule = B3/S23 b2o$2bo$2bobo$3bobo$5b2ob2o$8b2o$2b2o$3bo$3o$o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 4 GPS 2 THUMBSIZE 2 ]]
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Pattern type	Oscillator
Number of cells	20
Bounding box	10×10
Period	4
Mod	4
Heat	8.5
Volatility	0.55
Strict volatility	0.55
Discovered by	David Buckingham
Year of discovery	Unknown
Rules Outer-totalistic rules B3/S23 – B3678/S023678 Important rules Conway Life, HighLife # of rules 27 = 128 Isotropic rules B3-ceky/S2-n3-ejky – B2i34-ajnr5-acq678/S0234-ajnrw5-ijq678
Glider synthesis Fewest gliders 12 Catagolue-generated RLE eaterblockfrob_synth.rle Uploaded synthesis RLE eaterblockfrob_synth.rle
Pattern files Plaintext eaterblockfrob.cells RLE eaterblockfrob.rle
Identifiers apgcode xp4_64k8wc871zx1ro Pentadecathlon ID 20P4.4

Eater/block frob is a period-4 oscillator found by David Buckingham in 1976 or earlier. It is composed of an eater 1, a block, and what is roughly a hook with tail. It is most useful in its use in the p4 bumper. It is an eater 5 constantly being renewed by an eater 1. The block can be replaced with a long hook with tail, and the eater 1 can be replaced with a LW emulator, MW emulator or HW emulator.

External links

• Eater/block frob at the Life Lexicon

• Eater/block frob at Adam P. Goucher's Catagolue

• 20P4.4 at Heinrich Koenig's Game of Life Object Catalogs