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 A188588 #8 Apr 16 2013 16:29:49 %S A188588 1,2,3,12,60,360,2520,20160,181440,1814400,19958400,239500800, %T A188588 3113510400,43589145600,653837184000,10461394944000,177843714048000, %U A188588 3201186852864000,60822550204416000,1216451004088320000,25545471085854720000 %N A188588 Row sums of 1-Euler triangle A188587. %F A188588 a(n) = (n+1)*A001710(n). %F A188588 a(n) = (n+1)*a(n-1), n>2. %Y A188588 Cf. A001710. %K A188588 nonn,easy %O A188588 0,2 %A A188588 _Paul Barry_, Apr 04 2011