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 A144348 #6 Jul 04 2023 08:18:21 %S A144348 1,24,600,17160,563976,21095424,887785920,41589313920,2148534533376, %T A144348 121416817826304,7453542764828160,494050046853242880, %U A144348 35173674025152638976,2677307532371585777664,216991376759173367070720,18658548982937189595709440,1696677198406950703545778176 %N A144348 Third column (m=3) of triangle S2p(-4) = A011801. %F A144348 a(n) = A011801(n+3,3), n>=0. %Y A144348 Cf. A011801, A144347 (m=2 column). %K A144348 nonn,easy %O A144348 0,2 %A A144348 _Wolfdieter Lang_, Oct 09 2008