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 A293178 #7 Oct 26 2017 06:03:22 %S A293178 2,17,504,53932 %N A293178 Number of linearly chained pairs of n X n alternating sign matrices. %H A293178 Heuer, Dylan, Chelsey Morrow, Ben Noteboom, Sara Solhjem, Jessica Striker, and Corey Vorland. "Chained permutations and alternating sign matrices—Inspired by three-person chess." Discrete Mathematics 340, no. 12 (2017): 2732-2752. Also <a href="http://arxiv.org/abs/1611.03387">arXiv:1611.03387</a>. %Y A293178 Cf. A005130. %K A293178 nonn,more %O A293178 1,1 %A A293178 _N. J. A. Sloane_, Oct 19 2017