Gallery / misc / Callahan's infinite growth

Callahan's infinite growth

Ten cells inside a 5x5 box that grow forever - the smallest bounding box known to do so. Paul Callahan found it in 1995 by exhaustive search.

B3/S23 live simulation — not a recording
Category
misc
Rule
B3/S23
Bounding box
5 × 5
Live cells
13
Discovered by
Paul Callahan, 1995
Views
3
infinite growth minimal
Pattern data
x = 5, y = 5, rule = B3/S23
3obo$o$3b2o$b2obo$obobo!

Run Length Encoded - the standard interchange format. This will paste straight into Golly or any other Life program.