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A274925 Northeast spoke of spiral in A274640. 1
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, 49, 80, 45, 53, 85, 93, 51, 52, 95, 60, 55, 67, 70, 116, 64, 129, 69, 77, 133, 74, 142, 86, 89, 94, 153, 90, 152, 96, 97, 88, 98, 102, 170, 103, 109, 99, 190, 186 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

F. Michel Dekking, Jeffrey Shallit, and N. J. A. Sloane, Queens in exile: non-attacking queens on infinite chess boards, arXiv:1907.09120, July 2019

CROSSREFS

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

Sequence in context: A072027 A061898 A021756 * A084398 A118306 A237651

Adjacent sequences:  A274922 A274923 A274924 * A274926 A274927 A274928

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 12 2016

EXTENSIONS

More terms from Alois P. Heinz, Jul 12 2016

STATUS

approved

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Last modified August 21 19:04 EDT 2019. Contains 326168 sequences. (Running on oeis4.)