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 A218600 #11 Jul 03 2022 08:49:48 %S A218600 0,1,2,4,7,12,21,38,68,122,220,399,729,1343,2493,4655,8727,16405, %T A218600 30901,58319,110298,209098,397407,757296,1446945,2771951,5323982, %U A218600 10250571,19780122,38243220,74058513,143592684,278661808,541110611,1051158027,2042539460,3969857205 %N A218600 Partial sums of A213709. %C A218600 a(n) tells the position of (2^n)-1 in A179016. %o A218600 (Scheme with _Antti Karttunen_'s Intseq-library): (define A218600 (PARTIALSUMS 1 0 A213709)) %Y A218600 a(n) = A213710(n)-1. A179016(a(n))=(2^n)-1. Cf. A213711. %K A218600 nonn %O A218600 0,3 %A A218600 _Antti Karttunen_, Nov 05 2012 %E A218600 a(29)-a(36) from _Alois P. Heinz_, Jul 03 2022