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A274925 Northeast spoke of spiral in A274640. 1

%I

%S 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 49,80,45,53,85,93,51,52,95,60,55,67,70,116,64,129,69,77,133,74,142,

%U 86,89,94,153,90,152,96,97,88,98,102,170,103,109,99,190,186

%N Northeast spoke of spiral in A274640.

%H Alois P. Heinz, <a href="/A274925/b274925.txt">Table of n, a(n) for n = 0..1000</a>

%H 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 Cf. A274640, A274641. The 8 spokes are A274924-A274931.

%K nonn

%O 0,2

%A _N. J. A. Sloane_, Jul 12 2016

%E More terms from _Alois P. Heinz_, Jul 12 2016

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Last modified May 16 21:28 EDT 2021. Contains 343951 sequences. (Running on oeis4.)