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 A255123 #7 Feb 14 2015 21:31:08 %S A255123 0,1,1,0,3,1,0,3,3,3,1,0,1,1,3,2,3,3,3,1,0,1,1,3,2,5,4,3,1,1,3,2,3,3, %T A255123 3,1,0,1,1,3,2,5,2,1,3,2,2,4,4,3,1,1,3,2,5,4,3,1,1,3,2,3,3,3,1,0,1,1, %U A255123 3,2,5,2,1,3,2,2,4,2,1,3,2,2,3,1,2,2,2,4,4,3,1,1,3,2,5,2,1,3,2,2,4,4,3,1,1,3,2,5,4,3,1,1,3,2,3,3,3,1,0 %N A255123 a(n) = A255056(n) - A255053(n). %H A255123 Antti Karttunen, <a href="/A255123/b255123.txt">Table of n, a(n) for n = 0..16142</a> %F A255123 a(n) = A255056(n) - A255053(n). %o A255123 (Scheme) (define (A255123 n) (- (A255056 n) (A255053 n))) %Y A255123 Cf. A255053, A255056, A255061, A255124. %Y A255123 Analogous sequence: A218603. %K A255123 nonn %O A255123 0,5 %A A255123 _Antti Karttunen_, Feb 14 2015