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 A218789 #9 Jan 26 2014 13:43:04 %S A218789 0,1,0,1,0,3,4,3,6,11,10,11,10,13,18,17,10,11,12,15,16,15,18,23,22,15, %T A218789 16,17,20,13,14,15,10,11,6,3,2,3,2,5,10,9,2,3,4,7,0,1,2,-3,-2,-7,-10, %U A218789 -11,-18,-17,-16,-21,-20,-9,-8,-7,6,7,2,1,4,5,4,7,12 %N A218789 Partial sums of A218618. %C A218789 The term a(n) indicates approximately the "balance" of the binary beanstalk (cf. A179016) at n steps up from the root, which in turn has repercussions for the sequences such as A218542 and A218543. %H A218789 Antti Karttunen, <a href="/A218789/b218789.txt">Table of n, a(n) for n = 0..30901</a> %o A218789 (Scheme with _Antti Karttunen_'s Intseq-library): (define A218789 (PARTIALSUMS 0 0 A218618)) %Y A218789 Cf. A179016, A218618, A218603, A218604, A218543. %K A218789 sign,look %O A218789 0,6 %A A218789 _Antti Karttunen_, Dec 03 2012