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 A369365 #8 Sep 20 2024 10:12:49 %S A369365 1,1,2,6,16,50,150,458,1388,4233,12875,39227,119456,363868,1107912, %T A369365 3372793,10264156,31228969 %N A369365 Number of free rooted (or pointed) polyiamonds with n cells. %H A369365 <a href="/index/Pol#polyominoes">Index entries for sequences related to polyominoes</a>. %Y A369365 Cf. A000577, A126202, A369362, A369366. %K A369365 nonn,more %O A369365 1,3 %A A369365 _Pontus von Brömssen_, Jan 22 2024 %E A369365 a(18) from _John Mason_, Sep 20 2024