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A317454 Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1
2, 10, 36, 72, 353, 1525, 5601, 20603, 93180, 376067, 1440298, 6219533, 25449350, 101546963, 425583385, 1746282597, 7098263711, 29371457881, 120619016253, 493714118241, 2033241533001, 8352126707843, 34269831877530, 140900257953996 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A317458.

LINKS

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

R. H. Hardin, Empirical recurrence of order 64

FORMULA

Empirical recurrence of order 64 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317458.

Sequence in context: A140954 A309889 A155894 * A244715 A212573 A100535

Adjacent sequences:  A317451 A317452 A317453 * A317455 A317456 A317457

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 28 2018

STATUS

approved

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Last modified September 21 20:10 EDT 2021. Contains 347598 sequences. (Running on oeis4.)