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A304018 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero. 1
8, 928, 2421, 16187, 87747, 488944, 2820436, 16004647, 90893514, 522170664, 2984588588, 17090064690, 97994342628, 561581968676, 3219331039992, 18459890079828, 105841123581413, 606904072842495, 3480160483828364 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A304019.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304019.

Sequence in context: A064072 A146536 A189646 * A305366 A304958 A316640

Adjacent sequences:  A304015 A304016 A304017 * A304019 A304020 A304021

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 04 2018

STATUS

approved

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Last modified May 19 22:56 EDT 2019. Contains 323411 sequences. (Running on oeis4.)