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 A275900 #16 Aug 25 2016 23:06:52 %S A275900 1,3,2,5,4,9,6,11,8,7,13,15,10,19,12,14,22,25,16,27,18,17,29,31,20,21, %T A275900 35,37,23,39,24,41,26,28,45,48,30,32,51,53,33,34,56,58,36,38,60,63,40, %U A275900 66,42,43,70,44,72,74,46,76,47,78,50,49,82,84,52,86,54,89,55,57,92,59,96,98,61,100,62,102 %N A275900 Following the successive antidiagonals in A065188, let the n-th queen appear in square (x(n),y(n)); sequence gives y(n). %C A275900 See A275899 for x(n). %C A275900 This is a permutation of the natural numbers. %C A275900 This assumes the indexing starts at 1. See A275901, A275902 if the indexing begins at 0. %H A275900 N. J. A. Sloane, <a href="/A275900/b275900.txt">Table of n, a(n) for n = 1..7500</a> %p A275900 See A275899. %Y A275900 Cf. A065188, A275899, A275901, A275902. %K A275900 nonn %O A275900 1,2 %A A275900 _N. J. A. Sloane_, Aug 24 2016