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 A280492 #8 Jan 10 2017 19:12:38 %S A280492 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,-1,0,0,0,0,0,1,0, %T A280492 0,0,0,0,4,0,0,0,0,0,-2,0,0,0,0,0,4,0,0,0,1,0,7,0,0,0,0,0,-1,0,2,0,0, %U A280492 0,7,0,0,0,0,0,-4,0,0,0,0,0,-6,0,0,0,5,0,8,0,0,0,1,0,13,0,6,0,0,0,-3,0,0,0,0,0,-3,0,0,0,0,0,12,0,0,0,9,0,2,0,2 %N A280492 a(1) = 0; for n > 1, a(n) = A246277(n) - A078898(n). %C A280492 For n > 1, a(n) gives the difference of column positions of n's location in arrays A246278 and A083221. Note that any n occurs on the same row in both arrays. %H A280492 Antti Karttunen, <a href="/A280492/b280492.txt">Table of n, a(n) for n = 1..8192</a> %F A280492 a(1) = 0; for n > 1, a(n) = A246277(n) - A078898(n). %o A280492 (Scheme) (define (A280492 n) (if (= 1 n) 0 (- (A246277 n) (A078898 n)))) %Y A280492 Cf. A078898, A083221, A246277, A246278, A249820. %Y A280492 Cf. also A278523, A279350, A280497, A280498. %K A280492 sign %O A280492 1,39 %A A280492 _Antti Karttunen_, Jan 09 2017