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 A274925 #16 Mar 07 2020 13:50:20 %S A274925 1,3,2,9,7,8,12,15,13,17,20,22,26,42,27,25,28,50,35,32,37,34,38,68,48, %T A274925 49,80,45,53,85,93,51,52,95,60,55,67,70,116,64,129,69,77,133,74,142, %U A274925 86,89,94,153,90,152,96,97,88,98,102,170,103,109,99,190,186 %N A274925 Northeast spoke of spiral in A274640. %H A274925 Alois P. Heinz, <a href="/A274925/b274925.txt">Table of n, a(n) for n = 0..1000</a> %H A274925 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 A274925 Cf. A274640, A274641. The 8 spokes are A274924-A274931. %K A274925 nonn %O A274925 0,2 %A A274925 _N. J. A. Sloane_, Jul 12 2016 %E A274925 More terms from _Alois P. Heinz_, Jul 12 2016