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 A219647 #14 Jul 17 2025 14:44:58 %S A219647 0,2,5,9,13,18,23,29,36,43,51,59,67,76,85,95,105,115,126,137,148,160, %T A219647 172,185,198,211,225,239,253,268,283,298,314,330,347,364,382,400,418, %U A219647 437,456,475,495,515,535,556,577,599,621,643,666,689,712,735,759,784 %N A219647 Positions of zeros in A219649. %H A219647 Antti Karttunen, <a href="/A219647/b219647.txt">Table of n, a(n) for n = 0..10946</a> %F A219647 a(n) = n+A219646(n). %o A219647 (Scheme) (define (A219647 n) (+ n (A219646 n))) %Y A219647 Analogous sequence for binary system: A213707, for factorial number system: A219657. %Y A219647 Cf. A219646, A219649. %K A219647 nonn %O A219647 0,2 %A A219647 _Antti Karttunen_, Nov 24 2012