A316951 - OEIS

A316951

Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

5, 1493, 71505, 4335826, 259163370, 15440641209, 920789559090, 54906173292280, 3273992108473660, 195225156534000032, 11641092125426590175, 694147342926715857535, 41391351968297005683248, 2468127308681014210659067

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OFFSET

1,1

COMMENTS

Column 6 of A316953.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 76

FORMULA

Empirical recurrence of order 76 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316953.

Sequence in context: A317220 A305690 A317070 * A317731 A259867 A169620

Adjacent sequences: A316948 A316949 A316950 * A316952 A316953 A316954

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 17 2018

STATUS

approved