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 A276439 #5 Sep 04 2016 17:20:56 %S A276439 0,1,2,3,2,3,4,5,4,5,4,5,4,5,4,5,4,5,6,7,6,7,6,5,7,8,7,6,8,9,8,9,8,7, %T A276439 9,10,9,8,7,8,7,9,10,9,8,10,11,10,9,8,7,8,7,8,7,8,7,8,9,10,9,10,9,8, %U A276439 10,11,10,9,8,9,8,9,10,11,10,9,8,9,8,10,11,10,11,10,9,8,9,10,11,10,11,12,13,12,11,10,9,8,9,10 %N A276439 Partial sums of A276438. %H A276439 Antti Karttunen, <a href="/A276439/b276439.txt">Table of n, a(n) for n = 0..10000</a> %F A276439 a(0) = 0; for n >= 1, a(n) = A276438(n) + a(n-1). %o A276439 (Scheme, with memoization-macro definec) %o A276439 (definec (A276439 n) (if (zero? n) n (+ (A276438 n) (A276439 (- n 1))))) %Y A276439 Cf. A274647, A276438 %Y A276439 Cf. also A064289, A078759. %Y A276439 Differs from A078759 for the first time at n=24, where a(24)=7 while A078759(24)=6. %K A276439 nonn %O A276439 0,3 %A A276439 _Antti Karttunen_, Sep 04 2016