A324781 - OEIS

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A324781

South-East spoke of spiral in A274641.

9

0, 5, 4, 11, 15, 16, 20, 23, 26, 12, 14, 35, 39, 42, 46, 53, 22, 55, 58, 61, 38, 67, 68, 34, 45, 36, 41, 89, 49, 96, 93, 98, 101, 56, 106, 114, 116, 115, 119, 65, 129, 130, 72, 76, 139, 142, 75, 79, 77, 158, 160, 155, 164, 91, 90, 173, 88, 180, 103, 186, 189

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..60.

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 A324774-A324781. To get them, subtract 1 from A274924-A274931, respectively.

Sequence in context: A051552 A165367 A166549 * A232894 A262902 A215332

Adjacent sequences: A324778 A324779 A324780 * A324782 A324783 A324784

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 05 2019

STATUS

approved