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A305181 Number of nX7 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 1
8, 22, 49, 71, 140, 836, 1750, 5407, 19965, 44251, 150549, 488420, 1217938, 3981440, 12553050, 34234337, 106068538, 331125859, 954603491, 2861242231, 8832265881, 26265684299, 77767182950, 237076601097, 715625119985, 2119273438439 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A305182.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305182.

Sequence in context: A239360 A211532 A269429 * A048489 A124701 A002968

Adjacent sequences:  A305178 A305179 A305180 * A305182 A305183 A305184

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 26 2018

STATUS

approved

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Last modified January 25 16:42 EST 2020. Contains 331245 sequences. (Running on oeis4.)