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 A103468 #9 Sep 25 2022 10:40:56 %S A103468 1,1,4,19,127,985,8350,73675,664411,6078768,56198759,523924389, %T A103468 4918127659 %N A103468 Number of polyominoes consisting of n regular unit 10-gons. %H A103468 Matthias Koch and Sascha Kurz, <a href="http://arxiv.org/abs/math/0605144">Enumeration of generalized polyominoes</a>, arXiv:math.CO/0605144 %H A103468 S. Kurz, <a href="http://www.mathe2.uni-bayreuth.de/sascha/oeis/k-polyominoes.html">k-polyominoes</a>. %Y A103468 Cf. A000577, A000104, A000228, A103465 - A103473, A115071, A120102 - A120104. %K A103468 more,nonn %O A103468 1,3 %A A103468 _Sascha Kurz_, Feb 07 2005 %E A103468 More terms from _Sascha Kurz_, Jun 09 2006