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A299222 Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero. 0
0, 4, 113, 5663, 766094, 281251424, 260938102438, 624662873923282, 3865535525302817693 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299228.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299228.

Sequence in context: A103499 A298331 A299394 * A300036 A199834 A194495

Adjacent sequences:  A299219 A299220 A299221 * A299223 A299224 A299225

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 05 2018

STATUS

approved

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Last modified May 19 03:44 EDT 2022. Contains 353826 sequences. (Running on oeis4.)