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A317262 Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1
5, 17, 21, 74, 158, 440, 1220, 3655, 10907, 33353, 105116, 333129, 1058444, 3400117, 10980660, 35537467, 115249353, 374708401, 1220117014, 3975988754, 12966960042, 42319911302, 138179803155, 451316645803, 1474484612919, 4818324435958 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A317266.

LINKS

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

R. H. Hardin, Empirical recurrence of order 67

FORMULA

Empirical recurrence of order 67 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317266.

Sequence in context: A029986 A076275 A316307 * A031270 A022141 A322985

Adjacent sequences:  A317259 A317260 A317261 * A317263 A317264 A317265

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 25 2018

STATUS

approved

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Last modified January 17 12:12 EST 2022. Contains 350394 sequences. (Running on oeis4.)