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 A134281 #8 Sep 25 2024 15:48:10
%S A134281 1,7,73,1165,23737,611221,18690205,668252677,27220297405,
%T A134281 1246965912877,63372307277821,3539782399096237,215467387904873101,
%U A134281 14196835617995678125,1006540575704304853261,76406049317127647613901
%N A134281 Row sums of triangle A134280 (S2(6)').
%F A134281 a(n) = Sum_{m=1..n} A134280(n,m), n>=1.
%F A134281 a(n) = Sum_{k=1..p(n)} A134279(n,k), with p(n) = A000041(n) (number of partitions of n).
%Y A134281 Cf. A134282 (alternating row sums of triangle A134280).
%K A134281 nonn,easy
%O A134281 1,2
%A A134281 _Wolfdieter Lang_, Nov 13 2007