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A302533 Number of 7Xn 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
0, 421, 9091, 15852, 92603, 1551340, 16130212, 82774516, 506265517, 5660323142, 51739325680, 335761691745, 2418466197168, 21927716125718, 184725699865822, 1350254421406010, 10284927374810243, 86141789798720948, 701278900747323768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A302528.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Cf. A302528.

Sequence in context: A302284 A302732 A251198 * A303414 A242149 A083193

Adjacent sequences:  A302530 A302531 A302532 * A302534 A302535 A302536

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 09 2018

STATUS

approved

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Last modified January 28 12:15 EST 2022. Contains 350656 sequences. (Running on oeis4.)