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A274619 Fourth column of A274528. 3
5, 0, 1, 4, 3, 6, 2, 8, 9, 10, 11, 7, 13, 12, 15, 16, 17, 18, 14, 20, 19, 22, 21, 24, 25, 26, 27, 23, 29, 28, 31, 32, 33, 34, 30, 36, 35, 38, 37, 40, 41, 42, 43, 39, 45, 44, 47, 48, 49, 50, 46, 52, 51, 54, 53, 56, 57, 58, 59, 55, 61, 60, 63, 64, 65, 66, 62, 68, 67, 70, 69, 72, 73, 74, 75, 71, 77, 76, 79 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..78.

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. A274528. Adding 1 gives A274617.

Sequence in context: A325736 A334364 A174859 * A230844 A054672 A021670

Adjacent sequences:  A274616 A274617 A274618 * A274620 A274621 A274622

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 01 2016

STATUS

approved

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Last modified January 19 12:40 EST 2022. Contains 350465 sequences. (Running on oeis4.)