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A297906 Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 4 king-move adjacent elements, with upper left element zero. 1
21, 203, 20, 466, 2353, 1586, 23911, 117161, 369290, 3815083, 22352269, 133622612, 1094086797, 7257658041, 50479207435, 380579362922, 2653381878723, 19060249633810, 139787845467370, 993619765856273, 7181175650570587 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A297907.

LINKS

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

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A297907.

Sequence in context: A337897 A125384 A126542 * A298500 A298319 A299392

Adjacent sequences:  A297903 A297904 A297905 * A297907 A297908 A297909

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 08 2018

STATUS

approved

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Last modified November 27 18:22 EST 2020. Contains 338683 sequences. (Running on oeis4.)