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 A241944 #3 May 02 2014 16:29:24 %S A241944 1,4,9,20,33,54,79,114,153,200,251,320,395,488,589,700,815,956,1105, %T A241944 1284,1471,1670,1879,2122,2373,2642,2925,3226,3537,3894,4261,4672, %U A241944 5097,5542,6005,6492,6985,7534,8105,8700,9307,9976,10661,11408,12175,12960,13769 %N A241944 Row sums of triangle A027420. %C A241944 a(n) = sum(A027420(n,k): k = 0..n). %o A241944 (Haskell) %o A241944 a241944 = sum . a027420_row %K A241944 nonn %O A241944 0,2 %A A241944 _Reinhard Zumkeller_, May 02 2014