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 A387005 #7 Aug 15 2025 15:59:07 %S A387005 1,2,12,103 %N A387005 Number of free (d,2)-polyominoids of size n in arbitrary dimension d. %H A387005 Wikipedia, <a href="https://en.wikipedia.org/wiki/Polyominoid">Polyominoid</a>. %H A387005 <a href="/index/Pol#polyominoes">Index entries for sequences related to polyominoes</a>. %Y A387005 Main diagonal of A387003. %Y A387005 Row sums of A387004. %Y A387005 Cf. A005519 (polyominoes), A365565 (polysticks). %Y A387005 Cf. A000105 (2 dimensions), A075679 (3 dimensions), A366334 (4 dimensions). %K A387005 nonn,more %O A387005 1,2 %A A387005 _Pontus von Brömssen_, Aug 14 2025