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 A321065 #4 Oct 27 2018 14:27:04 %S A321065 23136128,873274112,43316046592,2700561836672,205352644205568, %T A321065 18629724957708800,1982309731660474368,244043425473888612352, %U A321065 34372758116984213536768,5486719044572824902107136,984593144718697864983347200,197245981020715237398610116608 %N A321065 Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=9. %Y A321065 Column k=9 of A262372. %K A321065 nonn %O A321065 9,1 %A A321065 _Alois P. Heinz_, Oct 26 2018