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A300681 Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 74, 131, 729, 6686, 54361, 494771, 4174087, 37464671, 329141039, 2923001082, 26034480835, 231283871073, 2056909000750, 18288923262193, 162634964488741, 1446254340101947, 12860864631967374, 114369341426371921 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A300682.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300682.

Sequence in context: A333100 A270340 A300379 * A309143 A044325 A044706

Adjacent sequences:  A300678 A300679 A300680 * A300682 A300683 A300684

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 11 2018

STATUS

approved

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Last modified January 22 13:21 EST 2021. Contains 340362 sequences. (Running on oeis4.)