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 A163917 #5 Dec 18 2015 18:14:46 %S A163917 0,1,3,7,2,9,5,6,8,10,16,4,14,11,48,17,18,13,12,51,50,20,19,28,15,52, %T A163917 49,60,21,23,29,31,53,55,61,63,127,22,27,30,47,54,57,62,149,125,126, %U A163917 25,24,46,45,59,56,148,150,118,124,113,26,39,44,35,58,152,151,146,117 %N A163917 Permutation A163915 shown in N x N grid. %H A163917 A. Karttunen, <a href="/A163917/b163917.txt">Table of n, a(n) for n = 0..32895</a> %H A163917 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A163917 The top left 8x8 corner of this array: %e A163917 +0 +1 +7 +5 16 17 20 21 %e A163917 +3 +2 +6 +4 18 19 23 22 %e A163917 +9 +8 14 13 28 29 27 25 %e A163917 10 11 12 15 31 30 24 26 %e A163917 48 51 52 53 47 46 39 37 %e A163917 50 49 55 54 45 44 36 38 %e A163917 60 61 57 59 35 34 40 41 %e A163917 63 62 56 58 32 33 43 42 %Y A163917 Inverse: A163918. a(n) = A163915(A054238(n)) = A163355(A163907(n)) = A163905(A163357(n)). See also A163357, A163907. %K A163917 nonn,tabl %O A163917 0,3 %A A163917 _Antti Karttunen_, Sep 19 2009