A324781 South-East spoke of spiral in A274641.

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

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