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 A103720 #3 Oct 12 2012 14:40:23 %S A103720 1,11,100,910,8729,89733,993005,11826430,151253806,2071221724, %T A103720 30271456852,470710866080,7763809049424,135443758109328, %U A103720 2492613881571600,48271966288640928,981500863085719776 %N A103720 Column m=3 sequence (unsigned) of triangle A103718(n,m), n>=0, without leading zeros. %F A103720 a(n)= |S1(n+4, 4)| + |S1(n+4, 5)|= |S1(n+5, 5)|-(n+3)*|S1(n+4, 5)|, with S1(n, m):= A048994(n, m), n>=>m=0 (Stirling1 triangle). %K A103720 nonn,easy %O A103720 0,2 %A A103720 _Wolfdieter Lang_, Feb 15 2005