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A303414 Number of 7Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
0, 421, 10384, 15852, 115770, 2158662, 24386918, 158640643, 1293822589, 14788283853, 149020593141, 1275569366713, 11671994401668, 115222219445362, 1107799093548111, 10250710845474527, 96126433140397235, 918622040686576956 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A303410.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Cf. A303410.

Sequence in context: A302732 A251198 A302533 * A242149 A083193 A340871

Adjacent sequences:  A303411 A303412 A303413 * A303415 A303416 A303417

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 23 2018

STATUS

approved

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Last modified October 24 20:35 EDT 2021. Contains 348233 sequences. (Running on oeis4.)