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 A001416 M4271 N1785 #36 Mar 21 2025 21:57:34 %S A001416 1,6,60,1368,15552,201240,2016432,21582624,201060768,1944012744, %T A001416 17257455960,156760071600,1346073913440,11734199738820,98420246759688 %N A001416 Number of ways of folding a 3 X n strip of stamps. %D A001416 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A001416 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A001416 Robert Dickau, <a href="https://robertdickau.com/stampfolding.html">Stamp Folding</a>, 2010. %H A001416 Hunter Hogan, <a href="https://github.com/hunterhogan/mapFolding">mapFolding: A computational framework for enumerating distinct folding patterns of rectangular maps</a>, GitHub repository, (2025). %H A001416 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 A001416 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MapFolding.html">Map Folding</a>. %H A001416 <a href="/index/Fo#fold">Index entries for sequences obtained by enumerating foldings</a> %Y A001416 Cf. A000136, A000560, A001415, A001417, A001418, A195646. %K A001416 nonn,hard,more %O A001416 0,2 %A A001416 _N. J. A. Sloane_ %E A001416 a(8)-a(14) from _Fred Lunnon_ and _Sean A. Irvine_, Dec 26 2017