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A298621 Number of nX7 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 1
0, 240, 88, 4068, 51213, 480343, 10823065, 161922923, 2400592063, 44083556765, 752293726555, 11956613279238, 210428029078777, 3622125456608840, 59808591189923678, 1031998208853433156, 17707660917785401664 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A298622.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298622.

Sequence in context: A282230 A015161 A298833 * A299587 A078151 A278179

Adjacent sequences:  A298618 A298619 A298620 * A298622 A298623 A298624

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 23 2018

STATUS

approved

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Last modified May 23 10:05 EDT 2022. Contains 353975 sequences. (Running on oeis4.)