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 A144894 #7 Jul 04 2023 13:06:39 %S A144894 1,5,55,485,4380,39570,421800,4265100,49455000,594001800,7784683200, %T A144894 107814672000,1624964544000,25881953328000,443107288512000, %U A144894 8028628336512000,154539996629760000,3135393617489280000,67045955961922560000,1503619681171829760000,35321502985569884160000 %N A144894 Third column (m=3) of triangle A144891 (S1hat(5)). %F A144894 a(n) = A144891(n+3,3), n>=0. %Y A144894 Cf. A144891, A001720 (first column), A144893 (second column). %K A144894 nonn,easy %O A144894 0,2 %A A144894 _Wolfdieter Lang_, Oct 09 2008