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A298132 Number of nX7 0..1 arrays with every element equal to 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero. 1
0, 54, 826, 5782, 175014, 3752401, 76791444, 1706951987, 36185741209, 786733395586, 16992126182076, 366550521559787, 7927928295359425, 171260155001322160, 3700464812129655258, 79963026370989545009 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A298133.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298133.

Sequence in context: A093972 A281775 A297865 * A008401 A247048 A280479

Adjacent sequences:  A298129 A298130 A298131 * A298133 A298134 A298135

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 13 2018

STATUS

approved

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Last modified March 22 01:06 EDT 2019. Contains 321406 sequences. (Running on oeis4.)