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A298314 Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero. 0
1, 4, 3, 63, 507, 2466, 111137, 5833295, 281897638, 75712523939 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A298320.

LINKS

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

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A298320.

Sequence in context: A328193 A273878 A013335 * A299389 A220556 A299188

Adjacent sequences:  A298311 A298312 A298313 * A298315 A298316 A298317

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 17 2018

STATUS

approved

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Last modified August 10 04:38 EDT 2020. Contains 336368 sequences. (Running on oeis4.)