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 A291956 #8 Sep 06 2017 14:10:36 %S A291956 1,1,0,1,-1,0,0,1,-1,1,0,1,-2,0,-2,4,-2,3,-4,4,-7,8,-8,13,-15,16,-23, %T A291956 27,-32,42,-50,63,-80,94,-119,150,-180,225,-279,344,-427,526,-652,807, %U A291956 -998,1235,-1526,1892,-2339,2889,-3581,4427,-5476,6779,-8382,10378 %N A291956 Row sums of A291955. %H A291956 Seiichi Manyama, <a href="/A291956/b291956.txt">Table of n, a(n) for n = 0..10000</a> %Y A291956 Cf. A291905. %K A291956 sign %O A291956 0,13 %A A291956 _Seiichi Manyama_, Sep 06 2017