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A303253 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 1934, 21843, 584333, 13529019, 322544617, 7600681910, 181926316054, 4319287740641, 102749087683745, 2445959829763007, 58194271138697372, 1384700107834934771, 32952218084019479209, 784117840394793531854 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A303254.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A303254.

Sequence in context: A302223 A302669 A302471 * A076955 A024112 A092414

Adjacent sequences:  A303250 A303251 A303252 * A303254 A303255 A303256

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 20 2018

STATUS

approved

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Last modified May 15 23:51 EDT 2022. Contains 353687 sequences. (Running on oeis4.)