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A305476 Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 6 or 8 king-move adjacent elements, with upper left element zero. 0
1, 5, 10, 48, 277, 1558, 11438, 123104, 1894686, 36262397, 960587975, 37710956242, 1964623266399, 139733367823273 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A305482.

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305482.

Sequence in context: A103932 A034190 A216390 * A270089 A336582 A271275

Adjacent sequences:  A305473 A305474 A305475 * A305477 A305478 A305479

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 02 2018

STATUS

approved

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Last modified March 2 12:26 EST 2021. Contains 341750 sequences. (Running on oeis4.)