This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A175002 #7 Nov 03 2024 16:46:11
%S A175002 0,2,1,5,7,18,40,197,669
%N A175002 Number of stable n-celled patterns ("still lifes") in the Maze (B3/S12345) cellular automaton.
%H A175002 LifeWiki, <a href="https://conwaylife.com/wiki/OCA:Maze">Maze</a>
%e A175002 a(3)=1 because there is only one distinct still life with three cells: a diagonal line of length three.
%Y A175002 Cf. A019473, A166476, A175000, A175001
%K A175002 hard,more,nonn
%O A175002 1,2
%A A175002 _Christian Schroeder_, Apr 03 2010