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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.

A373636 Number of free n-celled (planar) polyhexes to which two inequivalent cells can be adjoined such that the two resulting free (n+1)-celled polyhexes are identical.

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%I A373636 #7 Jun 14 2024 12:16:20
%S A373636 0,0,0,1,1,0,7,8,0,40
%N A373636 Number of free n-celled (planar) polyhexes to which two inequivalent cells can be adjoined such that the two resulting free (n+1)-celled polyhexes are identical.
%C A373636 Two cells that can be adjoined to an n-celled polyhex are equivalent if there is an isomorphism between the two resulting (n+1)-celled polyhexes that maps the adjoined cell of the first to the adjoined cell of the second.
%H A373636 Pontus von Brömssen, <a href="/A373636/a373636.svg">Illustration up to n = 8</a>.
%H A373636 <a href="/index/Pol#polyominoes">Index entries for sequences related to polyominoes</a>.
%Y A373636 Cf. A369363, A373635, A373637.
%K A373636 nonn,more
%O A373636 1,7
%A A373636 _Pontus von Brömssen_, Jun 13 2024

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