A274931 - OEIS

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A274931

Southeast spoke of spiral in A274640.

17

1, 6, 5, 12, 16, 17, 21, 24, 27, 13, 15, 36, 40, 43, 47, 54, 23, 56, 59, 62, 39, 68, 69, 35, 46, 37, 42, 90, 50, 97, 94, 99, 102, 57, 107, 115, 117, 116, 120, 66, 130, 131, 73, 77, 140, 143, 76, 80, 78, 159, 161, 156, 165, 92, 91, 174, 89, 181, 104, 187, 190

(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: A103132 A046627 A309550 * A120114 A123168 A119636

Adjacent sequences: A274928 A274929 A274930 * A274932 A274933 A274934

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 12 2016

EXTENSIONS

More terms from Alois P. Heinz, Jul 12 2016

STATUS

approved