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A299648 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 0
1, 8, 247, 29408, 13431706, 23582064542, 159047224409362, 4121184916626976747, 410254820466598294243538, 156900221075811012583120150328, 230531929217067955283511588326278811 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299654.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=5

..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

..0..0..1..0..1. .0..0..0..1..0. .0..0..1..0..1. .0..0..1..1..0

..1..0..0..1..0. .0..1..1..0..0. .1..0..1..1..0. .0..0..1..0..0

..1..0..0..1..0. .0..1..1..0..1. .0..0..1..0..1. .1..1..0..0..0

..0..0..1..1..0. .1..0..0..0..1. .1..0..0..1..1. .0..0..1..1..0

CROSSREFS

Cf. A299654.

Sequence in context: A090241 A242196 A316802 * A219269 A029751 A035036

Adjacent sequences:  A299645 A299646 A299647 * A299649 A299650 A299651

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 15 2018

STATUS

approved

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Last modified March 3 10:38 EST 2021. Contains 341762 sequences. (Running on oeis4.)