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 A263280 #10 Nov 27 2015 00:19:42 %S A263280 0,0,0,0,0,0,0,0,0,1,2,1,2,1,3,1,2,2,2,1,1,2,1,2,1,1,1,2,1,1,1,3,1,3, %T A263280 2,2,4,4,0,1,0,1,1,3,2,1,1,3,2,4,1,0,0,1,4,2,2,0,1,0,1,4,6,5,5,4,2,2, %U A263280 3,2,1,2,1,2,1,2,1,2,1,0,1,0,1,1,0,2,2,1,3,2,2,2,4,2,1,2,2,2,2,0,0,0,2,0,0,0,2,0,1,3,2,2,3,3,4,3,3,3,2,2,4 %N A263280 a(n) = A262507(n) - A263279(n); number of integers k > A259934(n) for which A155043(k) = n = A155043(A259934(n)). %C A263280 a(n) gives the distance of position of A259934(n) at row n of table A263265 from its right edge. %H A263280 Antti Karttunen, <a href="/A263280/b263280.txt">Table of n, a(n) for n = 0..10000</a> %F A263280 a(n) = A262507(n) - A263279(n). %o A263280 (Scheme) %o A263280 (define (A263280 n) (- (A262507 n) (A263279 n))) %Y A263280 Cf. A155043, A259934, A262507, A263265, A263279. %Y A263280 Cf. also A262506. %K A263280 nonn %O A263280 0,11 %A A263280 _Antti Karttunen_, Nov 24 2015