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A304132 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3 or 6 king-move adjacent elements, with upper left element zero. 1
21, 103, 89, 244, 582, 1321, 2945, 6333, 13315, 28932, 63006, 134021, 284831, 607277, 1291893, 2755806, 5876374, 12482965, 26539285, 56520687, 120314557, 256086726, 545101754, 1160070321, 2469739659, 5259410891, 11198740071, 23845751230 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A304133.

LINKS

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

R. H. Hardin, Empirical recurrence of order 79

FORMULA

Empirical recurrence of order 79 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304133.

Sequence in context: A076454 A208538 A303681 * A304220 A305481 A219385

Adjacent sequences:  A304129 A304130 A304131 * A304133 A304134 A304135

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 07 2018

STATUS

approved

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Last modified August 2 02:34 EDT 2021. Contains 346409 sequences. (Running on oeis4.)