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 A195646 #14 Dec 04 2024 20:38:14 %S A195646 1,6,1368,85109616 %N A195646 Number of ways of folding a 3 X 3 X ... X 3 n-dimensional map. %H A195646 W. F. Lunnon, <a href="http://dx.doi.org/10.1090/S0025-5718-1968-0221957-8">A map-folding problem</a>, Math. Comp. 22 (1968), 193-199. %H A195646 W. F. Lunnon, <a href="https://doi.org/10.1093/comjnl/14.1.75">Multi-dimensional map-folding</a>, The Computer Journal, Volume 14, Issue 1, 1971, Pages 75-80. %H A195646 <a href="/index/Fo#fold">Index entries for sequences obtained by enumerating foldings</a> %Y A195646 Cf. A000136, A000560, A001417, A001418. %K A195646 nonn,hard,more %O A195646 0,2 %A A195646 _N. J. A. Sloane_, Sep 21 2011