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 A144278 #6 Jul 02 2023 12:47:44 %S A144278 1,2,14,108,1180,15400,255400,4888960,109951360,2793984000, %T A144278 79855107200,2522981120000,87503244928000,3299660415744000, %U A144278 134477619593856000,5887149103503360000,275541626811601920000,13727736328568199168000,725335510624740370432000 %N A144278 Third column (m=3) of triangle S2hat(-2) = A144275. %F A144278 a(n) = A144275(n+3,3), n>=0. %Y A144278 Cf. A144275, A144277 (m=2 column). %K A144278 nonn,easy %O A144278 0,2 %A A144278 _Wolfdieter Lang_, Oct 09 2008