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 A006767 M3137 #21 Jul 08 2025 16:54:20 %S A006767 0,0,0,0,3,35,412,4888,57122,667959,7799183 %N A006767 Number of 4-dimensional polyominoes with n cells. %D A006767 Dan Hoey, Bill Gosper and Richard C. Schroeppel, Discussions in Math-Fun Mailing list, circa Jul 13 1999. %D A006767 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A006767 W. F. Lunnon, <a href="https://doi.org/10.1093/comjnl/18.4.366">Counting Multidimensional Polyominoes</a>, Computer Journal, Vol. 18 (1975), pp. 366-67. %H A006767 R. C. Schroeppel, <a href="http://www.experimentalmath.info/workshop2004/schroeppel-talk.pdf">A few mathematical experiments</a> %Y A006767 A row of A049429. A column of A049430. %K A006767 nonn,more %O A006767 1,5 %A A006767 _N. J. A. Sloane_