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 A213706 #12 Dec 13 2023 14:45:18 %S A213706 0,1,3,5,8,11,15,19,24,29,35,41,48,55,62,69,77,85,94,103,113,123,133, %T A213706 143,154,165,176,187,199,211,223,235,248,261,275,289,304,319,334,349, %U A213706 365,381,397,413,430,447,464,481,499,517,535,553,572,591,610,629,649,669,689,709,730 %N A213706 Partial sums of A071542. %H A213706 Antti Karttunen, <a href="/A213706/b213706.txt">Table of n, a(n) for n = 0..720</a> %F A213706 a(0)=0, a(n) = a(n-1)+A071542(n) %o A213706 (MIT/GNU Scheme) %o A213706 ;; with AK's intseq additions: %o A213706 (define A213706 (PARTIALSUMS 0 0 A071542)) %Y A213706 Used to compute A213707. a(n)+1 gives the length of the n-th row in the irregular table A218254. %K A213706 nonn,easy %O A213706 0,3 %A A213706 _Antti Karttunen_, Oct 24 2012