A299555 - OEIS

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A299555

Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 5, 5, 34, 348, 4315, 88551, 2753155, 124402861, 8271451947

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

OFFSET

1,2

COMMENTS

Diagonal of A299561.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

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

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

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

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

CROSSREFS

Cf. A299561.

Sequence in context: A317812 A298961 A298721 * A160608 A208950 A160672

Adjacent sequences: A299552 A299553 A299554 * A299556 A299557 A299558

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 12 2018

STATUS

approved