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 A030444 #17 Jan 13 2023 05:40:01 %S A030444 1,4,28,234,2162,20972,209608,2135572,22049959,229939414,2416816416, %T A030444 25569786440,272057195864 %N A030444 Number of fixed n-celled polyknights. %C A030444 A polyknight is a variant of a polyomino in which two tiles a knight's move apart are considered adjacent. A polyknight need not be connected in the sense of a polyomino. %D A030444 G. Aleksandrowicz and G. Barequet, Parallel enumeration of lattice animals, Proc. 5th Int. Frontiers of Algorithmics Workshop, Zhejiang, China, Lecture Notes in Computer Science, 6681, Springer-Verlag, 90-99, May 2011. %Y A030444 Cf. A030445, A030446, A030447, A030448. %K A030444 nonn,more %O A030444 1,2 %A A030444 _David W. Wilson_ %E A030444 Corrected and extended by Guenter Stertenbrink (Sterten(AT)aol.com), May 23 2004 %E A030444 12th term from _Gill Barequet_, May 24 2011 %E A030444 a(13) from _John Mason_, Jan 13 2023