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 A006761 M4460 #26 Aug 19 2023 16:11:54 %S A006761 0,0,0,0,0,7,153,3350,65973,1215851,21466784 %N A006761 Number of one-sided, properly 5-dimensional polyominoes with n cells. %D A006761 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A006761 W. F. Lunnon, <a href="http://dx.doi.org/10.1093/comjnl/18.4.366">Counting multidimensional polyominoes</a>. Computer Journal 18 (1975), no. 4, pp. 366-367. %Y A006761 A column of A195738. Cf. A290305. %K A006761 nonn,more %O A006761 1,6 %A A006761 _N. J. A. Sloane_ %E A006761 a(10)-a(11) from _Sean A. Irvine_, Jul 26 2017