A298224 - OEIS

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A298224

Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

1, 4, 5, 195, 1749, 110320, 25406586, 7311722995, 11308912804354

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Diagonal of A298230.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=6

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

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

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

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

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

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

CROSSREFS

Cf. A298230.

Sequence in context: A331578 A355705 A041745 * A051152 A042181 A368531

Adjacent sequences: A298221 A298222 A298223 * A298225 A298226 A298227

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 15 2018

STATUS

approved