A324780 South spoke of spiral in A274641.

0, 4, 1, 8, 12, 7, 6, 10, 9, 16, 18, 29, 22, 30, 15, 44, 33, 37, 38, 36, 42, 34, 55, 56, 50, 52, 63, 57, 39, 67, 62, 64, 72, 86, 47, 84, 91, 74, 99, 75, 51, 105, 106, 65, 109, 87, 116, 60, 107, 122, 124, 101, 127, 88, 103, 128, 133, 95, 131, 142, 115, 146

Offset

0,2

Links

Table of n, a(n) for n=0..61.

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: A090219 A264285 A125129 * A280108 A299583 A013611

Adjacent sequences: A324777 A324778 A324779 * A324781 A324782 A324783

Keyword

nonn

Author

N. J. A. Sloane, Jul 05 2019

Status

approved