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 A321061 #4 Oct 27 2018 14:23:58 %S A321061 88,952,17008,438496,15214848,678914816,37727416576,2548520444480, %T A321061 205352644205568,19438574276705792,2134484763328610304, %U A321061 269000435778983860224,38553984887490450800640,6234291052542667315675136,1129460021283312750345682944 %N A321061 Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=5. %Y A321061 Column k=5 of A262372. %K A321061 nonn %O A321061 5,1 %A A321061 _Alois P. Heinz_, Oct 26 2018