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A304547 Number of nX4 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero. 2
1, 24, 60, 418, 2186, 12281, 72713, 423041, 2465234, 14485954, 84866473, 497508155, 2918999870, 17121301618, 100431971271, 589185472211, 3456348339399, 20276248723814, 118949602782537, 697809509847641, 4093656522150681 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A304551.

LINKS

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

R. H. Hardin, Empirical recurrence of order 70

FORMULA

Empirical recurrence of order 70 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304551.

Sequence in context: A321840 A052759 A226883 * A045558 A022761 A090386

Adjacent sequences:  A304544 A304545 A304546 * A304548 A304549 A304550

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 14 2018

STATUS

approved

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Last modified January 25 06:19 EST 2022. Contains 350565 sequences. (Running on oeis4.)