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A274928 West spoke of spiral in A274640. 3
1, 3, 5, 6, 7, 15, 10, 17, 13, 25, 14, 31, 20, 33, 34, 38, 35, 36, 23, 41, 52, 47, 53, 44, 30, 54, 61, 50, 51, 57, 71, 78, 81, 72, 79, 86, 93, 74, 91, 89, 98, 102, 105, 56, 106, 82, 97, 88, 95, 87, 59, 110, 68, 85, 125, 84, 126, 128, 116, 144, 92, 127, 142 (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: A154535 A006754 A281725 * A163620 A227722 A250419

Adjacent sequences:  A274925 A274926 A274927 * A274929 A274930 A274931

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 October 21 18:54 EDT 2019. Contains 328308 sequences. (Running on oeis4.)