Period-24 glider gun

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True period 24 gun
x = 43, y = 32, rule = B3/S23 23bo2bo$21b6o$17b2obo8bo$13b2obobobob8o2bo$11b3ob2o3bobo7b3o$10bo4b3o 2bo3bo3b2o$11b3o3b2ob4obo3bob2o$12bobo3bo5bo4bo2bo4b2obo$10bo8bob2o2b 2o2b2o5bob2obo$10b5ob4obo4b3o7bo4bo$15b2o4bo4bob3o2b2obob2ob2o$12b5ob 3o4b2ob2o3bobobobobo$11bo5b2o4b2obob2o5bo5bo$12b5o6b2obo3bo3bobob2ob2o $2ob2o9b2o2bo5bobo4bo2b3obobo$bobobobob2o3b3obo6bo2bobo4b3o2bo$o2bo7bo 6b2o3b3o8bobob2o$3o2bo4b2o11bo10bo$5b4obo17b2o4b2o$2b2obo6bo14bo3bo2b 2o$bo4bo3bo16bo6b2o$b3obo4bo16bo3bo2bo$11bo2bo3bo9b2o4bobob2o$b3obo4bo 8b2o3bo10b3o2bo$bo4bo3bo7bo6bo8b3obobo$2b2obo6bo10b3o8bobob2ob2o$5b4ob o24bo5bo$3o2bo4b2o21bobobobobo$o2bo7bo9b2o10b2obob2ob2o$bobobobob2o10b o8bo5bo4bo$2ob2o17b3o6bo4bob2obo$24bo4b3o5b2obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]]
Pattern type Gun
Number of cells 335
Bounding box 43×32
Period 24
Barrels Unknown
Discovered by Noam Elkies
Year of discovery 1997

True period 24 gun is the first true period 24 gun to be discovered. It was discovered by Noam D. Elkies in 1997. It uses three large period 4 oscillators to hassle two t-tetrominoes, which react together to produce gliders.