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 A261095 #6 Aug 10 2015 07:33:29 %S A261095 1,1,2,1,2,1,1,3,1,1,2,1,3,1,1,2,1,2,1,1,4,1,1,2,1,2,1,1,3,1,1,2,1,4, %T A261095 1,1,2,1,2,1,1,3,1,1,2,1,3,1,1,2,1,2,1,1,5,1,1,2,1,2,1,1,3,1,1,2,1,3, %U A261095 1,1,2,1,2,1,1,4,1,1,2,1,2,1,1,3,1,1,2,1,5,1,1,2,1,2,1,1,3,1,1,2,1,3,1,1,2,1,2,1,1,4,1,1,2,1,2,1,1,3,1,1,2 %N A261095 First differences of A219640: a(n) = A219640(n+1) - A219640(n). %H A261095 Antti Karttunen, <a href="/A261095/b261095.txt">Table of n, a(n) for n = 0..10946</a> %F A261095 a(n) = A219640(n+1) - A219640(n). %o A261095 (Scheme) (define (A261095 n) (- (A219640 (+ 1 n)) (A219640 n))) %Y A261095 Cf. A219640, A261093. %K A261095 nonn %O A261095 0,3 %A A261095 _Antti Karttunen_, Aug 08 2015