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 A261084 #5 Aug 10 2015 07:31:19 %S A261084 0,0,0,0,1,0,0,0,0,0,0,0,1,1,2,0,0,1,1,2,1,2,3,0,0,1,1,2,0,0,0,1,1,0, %T A261084 0,0,1,1,2,0,0,0,1,1,0,1,2,3,3,3,4,0,0,1,1,2,0,0,0,1,1,0,1,2,3,3,3,4, %U A261084 2,2,1,2,3,2,3,3,0,0,1,1,2,0,0,0,1,1,0,1,2,3,3,3,4,2,2,1,2,3,2,3,3,0,0,0,0,0,1,1,1,0,0,0,0,0,0,1,1,2,0,0,0 %N A261084 a(n) = A219645(n) - A219648(n). %H A261084 Antti Karttunen, <a href="/A261084/b261084.txt">Table of n, a(n) for n = 0..11817</a> %F A261084 a(n) = A219645(n) - A219648(n). %o A261084 (Scheme) (define (A261084 n) (- (A219645 n) (A219648 n))) %Y A261084 Cf. A219648, A219645, A261083. %K A261084 nonn %O A261084 0,15 %A A261084 _Antti Karttunen_, Aug 09 2015