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A317432 Number of nX4 0..1 arrays with every element unequal to 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1
2, 45, 201, 1140, 6964, 39216, 225065, 1322225, 7638732, 44316649, 257597032, 1494192462, 8673209233, 50350995888, 292232453854, 1696280208699, 9846142306726, 57150846167639, 331731209120051, 1925524077048630 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A317436.

LINKS

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

R. H. Hardin, Empirical recurrence of order 68

FORMULA

Empirical recurrence of order 68 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317436.

Sequence in context: A200158 A316444 A316126 * A302468 A303250 A151583

Adjacent sequences:  A317429 A317430 A317431 * A317433 A317434 A317435

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 27 2018

STATUS

approved

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Last modified July 23 10:42 EDT 2021. Contains 346259 sequences. (Running on oeis4.)