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A304668 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 6 king-move adjacent elements, with upper left element zero. 1
21, 237, 252, 1366, 5311, 15421, 49516, 163216, 516865, 1750074, 5929076, 19375640, 64686597, 216477114, 712798687, 2370003650, 7909241173, 26191198822, 87032751877, 289870295197, 961813760494, 3195386304270, 10630986578476 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A304669.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304669.

Sequence in context: A304930 A305346 A316614 * A306171 A316426 A317428

Adjacent sequences:  A304665 A304666 A304667 * A304669 A304670 A304671

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 16 2018

STATUS

approved

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Last modified May 21 11:28 EDT 2022. Contains 353908 sequences. (Running on oeis4.)