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 A006760 M3688 #17 Jul 08 2025 16:54:02 %S A006760 0,0,0,0,4,52,709,8946,108761,1296258,15308897 %N A006760 Number of one-sided 4-dimensional polyominoes with n cells. %D A006760 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A006760 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 A006760 A column of A195738. %K A006760 nonn,more %O A006760 1,5 %A A006760 _N. J. A. Sloane_