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A274926 North spoke of spiral in A274640. 2
1, 4, 6, 3, 12, 14, 15, 18, 20, 26, 25, 27, 21, 29, 22, 41, 32, 24, 36, 33, 46, 28, 42, 55, 50, 62, 60, 71, 69, 74, 54, 80, 82, 47, 44, 78, 91, 49, 98, 93, 79, 59, 86, 90, 109, 70, 101, 77, 120, 119, 97, 130, 118, 72, 67, 136, 131, 83, 141, 94, 124, 153, 139 (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, Electronic J. Combin., 27:1 (2020), #P1.52.

CROSSREFS

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

Sequence in context: A264962 A082193 A255767 * A079171 A029678 A123732

Adjacent sequences:  A274923 A274924 A274925 * A274927 A274928 A274929

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 May 14 07:13 EDT 2021. Contains 343879 sequences. (Running on oeis4.)