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 A268729 #7 Feb 28 2016 07:56:30 %S A268729 0,1,0,1,2,0,0,0,7,0,1,0,3,4,0,0,2,0,3,13,0,1,0,0,0,0,14,0,1,0,4,2,0, %T A268729 1,11,0,1,2,7,7,1,0,1,8,0,0,0,7,0,0,1,0,0,25,0,1,0,0,4,5,15,6,0,3,26, %U A268729 0,1,2,0,4,13,3,10,0,0,3,31,0,1,0,0,6,0,14,2,0,6,0,0,28,0,0,0,3,0,12,4,11,7,26,1,0,1,21,0 %N A268729 Transpose of A268728. %C A268729 See comments in A268728. %H A268729 Antti Karttunen, <a href="/A268729/b268729.txt">Table of n, a(n) for n = 1..8256; the first 128 antidiagonals of the array</a> %e A268729 The top left [1 .. 19] x [1 .. 19] section of the array: %e A268729 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1 %e A268729 0, 2, 0, 0, 2, 0, 0, 2, 0, 0, 2, 0, 0, 2, 0, 0, 2, 0, 0 %e A268729 0, 7, 3, 0, 0, 4, 7, 7, 0, 0, 0, 3, 3, 0, 0, 0, 7, 7, 0 %e A268729 0, 4, 3, 0, 2, 7, 0, 4, 4, 6, 0, 3, 7, 0, 0, 0, 3, 0, 2 %e A268729 0, 13, 0, 0, 1, 0, 5, 13, 0, 12, 13, 0, 0, 8, 0, 0, 13, 0, 0 %e A268729 0, 14, 1, 0, 1, 15, 3, 14, 4, 15, 0, 1, 14, 13, 0, 0, 15, 10, 14 %e A268729 0, 11, 1, 0, 6, 10, 2, 11, 9, 13, 7, 1, 0, 9, 11, 0, 0, 2, 10 %e A268729 0, 8, 0, 0, 0, 0, 7, 8, 0, 0, 11, 0, 6, 15, 0, 0, 8, 0, 0 %e A268729 0, 25, 3, 0, 6, 26, 2, 25, 12, 31, 14, 3, 1, 27, 9, 0, 0, 21, 25 %e A268729 0, 26, 3, 0, 1, 25, 1, 26, 1, 27, 13, 3, 11, 27, 3, 0, 8, 27, 0 %e A268729 0, 31, 0, 0, 5, 0, 0, 31, 0, 26, 14, 0, 14, 0, 0, 0, 17, 0, 11 %e A268729 0, 28, 1, 0, 6, 29, 3, 28, 0, 26, 3, 1, 8, 31, 15, 0, 11, 28, 19 %e A268729 0, 21, 1, 0, 0, 20, 1, 21, 12, 0, 8, 1, 8, 20, 0, 0, 8, 25, 8 %e A268729 0, 22, 0, 0, 6, 0, 4, 22, 0, 16, 10, 0, 9, 18, 0, 0, 14, 0, 9 %e A268729 0, 19, 3, 0, 5, 16, 5, 19, 4, 22, 10, 3, 12, 22, 2, 0, 18, 23, 10 %e A268729 0, 16, 3, 0, 5, 19, 4, 16, 9, 21, 15, 3, 11, 20, 15, 0, 10, 25, 16 %e A268729 0, 49, 0, 0, 2, 0, 3, 49, 0, 51, 0, 0, 3, 50, 0, 0, 1, 0, 26 %e A268729 0, 50, 1, 0, 0, 51, 0, 50, 12, 0, 13, 1, 8, 0, 0, 0, 1, 62, 3 %e A268729 0, 55, 1, 0, 2, 54, 1, 55, 1, 53, 1, 1, 2, 54, 2, 0, 2, 54, 26 %o A268729 (Scheme) (define (A268729 n) (A268728bi (A004736 n) (+ -1 (* 2 (A002260 n))))) ;; A268728bi given in A268728. %Y A268729 Cf. A268728. %K A268729 nonn,tabl %O A268729 1,5 %A A268729 _Antti Karttunen_, Feb 19 2016