A274930 South spoke of spiral in A274640.

1, 5, 2, 9, 13, 8, 7, 11, 10, 17, 19, 30, 23, 31, 16, 45, 34, 38, 39, 37, 43, 35, 56, 57, 51, 53, 64, 58, 40, 68, 63, 65, 73, 87, 48, 85, 92, 75, 100, 76, 52, 106, 107, 66, 110, 88, 117, 61, 108, 123, 125, 102, 128, 89, 104, 129, 134, 96, 132, 143, 116, 147

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: A276610 A065270 A065282 * A080379 A257513 A276849

Adjacent sequences: A274927 A274928 A274929 * A274931 A274932 A274933

Keyword

nonn

Author

N. J. A. Sloane, Jul 12 2016

Extensions

More terms from Alois P. Heinz, Jul 12 2016

Status

approved