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 A277814 #5 Nov 07 2016 09:10:53 %S A277814 0,1,2,3,4,4,5,6,7,8,8,8,9,9,10,11,12,13,14,14,14,14,14,15,16,16,16, %T A277814 16,17,17,18,19,20,21,22,22,23,23,23,23,23,23,23,23,23,23,24,25,26,27, %U A277814 27,27,27,27,27,27,28,28,28,28,29,29,30,31,32,33,34,34,35,35,35,35,36,37,37,37,37,37,37,37,37,38,38,38,38,38,38,39 %N A277814 a(n) = number of zeros in A277815[0..n]. %H A277814 Antti Karttunen, <a href="/A277814/b277814.txt">Table of n, a(n) for n = 0..16384</a> %o A277814 (Scheme) %o A277814 (define (A277814 n) (if (zero? n) n (+ (A277814 (- n 1)) (A000007 (A277815 n))))) %o A277814 (define (A000007 n) (if (zero? n) 1 0)) %Y A277814 Cf. A000007, A277815. %Y A277814 Left inverse of A277817. %K A277814 nonn %O A277814 0,3 %A A277814 _Antti Karttunen_, Nov 06 2016