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 A278483 #7 Nov 24 2016 09:27:37 %S A278483 0,0,1,0,2,2,0,2,4,3,0,2,6,6,4,0,2,6,8,8,5,0,2,6,12,12,10,6,0,2,6,12, %T A278483 14,14,12,7,0,2,6,12,18,18,18,14,8,0,2,6,12,18,24,24,20,16,9,0,2,6,12, %U A278483 18,26,26,26,24,18,10,0,2,6,12,18,26,30,30,30,26,20,11,0,2,6,12,18,26,38,38,38,36,30,22,12 %N A278483 Transpose of square array A278482. %C A278483 See comments in A278482. %H A278483 Antti Karttunen, <a href="/A278483/b278483.txt">Table of n, a(n) for n = 0..7259; the first 120 antidiagonals of the array</a> %o A278483 (Scheme) (define (A278483 n) (A278482bi (A025581 n) (A002262 n))) ;; Code for A278482bi given in A278482. %Y A278483 Transpose: A278482. %K A278483 nonn,tabl %O A278483 0,5 %A A278483 _Antti Karttunen_, Nov 23 2016