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 A286550 #5 May 18 2017 21:49:32 %S A286550 1,1,2,0,4,4,0,-2,8,12,8,14,0,2,-4,-8,16,28,24,36,16,30,28,26,0,8,4,8, %T A286550 -8,-2,-16,-20,32,60,56,80,48,86,72,52,32,64,60,82,56,102,52,74,0,20, %U A286550 16,34,8,34,16,22,-16,0,-4,6,-32,-22,-40,-50,64,124,120,168,112,198,160,132,96,176,172,230,144,250,104,108,64 %N A286550 a(n) = A252755(n) - n. %H A286550 Antti Karttunen, <a href="/A286550/b286550.txt">Table of n, a(n) for n = 0..16383</a> %F A286550 a(n) = A252755(n) - n. %o A286550 (Scheme) (define (A286550 n) (- (A252755 n) n)) %Y A286550 Cf. A252755, A286551. %K A286550 sign %O A286550 0,3 %A A286550 _Antti Karttunen_, May 18 2017