It has been suggested that this article or section be merged into Achim's p11 due to the following reason: not sure how this is notable, aside from historically; this information could easily fit as a note on either article (Discuss)
258P3 on Achim's p11
#N 258P3 on Achim's p11
#O Noam Elkies and Achim Flammenkamp
#C The first known non-trivial period 33 oscillator
x = 49, y = 31, rule = B3/S23
10b2o37b$10b2o37b$5bo10bo32b$4bobo8bobo10b2obobo4bo10b$3bobo3bo2bo3bob
o8bobob2obo2bobo3b2o4b$2bobo4bo2bo4bobo5b3o2bo3b4obo3b2o4b$3bo5bo2bo5b
o5bo3bobob2o4bo10b$25bo2bo2bobob2o4b4o2b2o$25bob2obo2bo2b2o2bo4bo2bo$
4b3o8b3o10bo3bobo4bobo2bob2ob$2o18b2o2b2o2bo3bo2b3o3b4o4b$2o18b2o6b2o
2bobo7b2o2b2ob$4b3o8b3o6bo2bobo4b2obo2b4obo2bo$25b2obo6bo4bo6b2o$24bob
ob2o3b6obo8b$3bo5bo2bo5bo5b2obobo2b2o2bobob2ob2o4b$2bobo4bo2bo4bobo4bo
2bobobo4bobo5bo4b$3bobo3bo2bo3bobo5bo2bobobo4bobo5bo4b$4bobo8bobo6b2ob
obo2b2o2bobob2ob2o4b$5bo10bo7bobob2o3b6obo8b$10b2o13b2obo6bo4bo6b2o$
10b2o12bo2bobo4b2obo2b4obo2bo$28b2o2bobo7b2o2b2ob$24b2o2bo3bo2b3o3b4o
4b$28bo3bobo4bobo2bob2ob$25bob2obo2bo2b2o2bo4bo2bo$25bo2bo2bobob2o4b4o
2b2o$24bo3bobob2o4bo10b$25b3o2bo3b4obo3b2o4b$27bobob2obo2bobo3b2o4b$
28b2obobo4bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART ]]
#C [[ GPS 3 LOOP 33 THUMBSIZE 2 ZOOM 8 ]]
258P3 on Achim's p11 is a period-33oscillator composed of 258P3 and Achim's p11. Although it is composed of two oscillators of smaller periods (p3 and p11 respectively), it is considered non-trivial because it contains a single cell that is alive in generation 21 and dead in the other 32 phases of the oscillator. It was discovered by Noam Elkies on June 25, 1997 and was the first period 33 oscillator to be found.[1]
Gallery
Generation 21 reveals the single cell that oscillates at the full period (in green)
