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A316422 Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 2
3, 9, 14, 32, 75, 148, 311, 687, 1443, 3042, 6534, 13887, 29434, 62747, 133549, 283771, 603852, 1284974, 2732689, 5813170, 12367681, 26307833, 55962509, 119051548, 253252756, 538730285, 1146033768, 2437923337, 5186096335, 11032236021 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A316427.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +5*a(n-3) +2*a(n-5) -2*a(n-6) -a(n-7) -2*a(n-8) -3*a(n-9) -2*a(n-11) -a(n-12)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316427.

Sequence in context: A197274 A316234 A317155 * A100785 A317038 A317692

Adjacent sequences:  A316419 A316420 A316421 * A316423 A316424 A316425

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 02 2018

STATUS

approved

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Last modified October 16 05:41 EDT 2021. Contains 348035 sequences. (Running on oeis4.)