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 A274926 #15 Mar 07 2020 13:50:20 %S A274926 1,4,6,3,12,14,15,18,20,26,25,27,21,29,22,41,32,24,36,33,46,28,42,55, %T A274926 50,62,60,71,69,74,54,80,82,47,44,78,91,49,98,93,79,59,86,90,109,70, %U A274926 101,77,120,119,97,130,118,72,67,136,131,83,141,94,124,153,139 %N A274926 North spoke of spiral in A274640. %H A274926 Alois P. Heinz, <a href="/A274926/b274926.txt">Table of n, a(n) for n = 0..1000</a> %H A274926 F. Michel Dekking, Jeffrey Shallit, and N. J. A. Sloane, <a href="https://www.combinatorics.org/ojs/index.php/eljc/article/view/v27i1p52/8039">Queens in exile: non-attacking queens on infinite chess boards</a>, Electronic J. Combin., 27:1 (2020), #P1.52. %Y A274926 Cf. A274640, A274641. The 8 spokes are A274924-A274931. %K A274926 nonn %O A274926 0,2 %A A274926 _N. J. A. Sloane_, Jul 12 2016 %E A274926 More terms from _Alois P. Heinz_, Jul 12 2016