login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A318858
Number of still-lifes synthesizable from n gliders in Conway's game of Life.
1
0, 6, 11, 111, 114, 217
OFFSET
1,2
COMMENTS
No stable form can be produced by a single glider (on an infinite or toroidal board), thus a(1) = 0.
Block, boat, beehive, loaf, eater, and pond are the six still-life forms that can be made from 2 gliders.
Tub, Ship, Barge, Long boat, Mango, Long barge, Very long boat, Hat, Half bakery, Paperclip, and Bi-pond can be made from 3 gliders.
Most of the terms in this sequence are conjectural and will likely increase over time. - Nathaniel Johnston, Dec 03 2019
CROSSREFS
Sequence in context: A180929 A212592 A351991 * A136980 A083834 A136978
KEYWORD
nonn,hard,more
AUTHOR
Ed Pegg Jr, Sep 04 2018
STATUS
approved