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A303258 Number of 7Xn 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
0, 1172, 28680, 349273, 11394429, 306224454, 7600681910, 204093228252, 5314350209386, 138643667659572, 3640560048826152, 95207607193735652, 2491557031345822081, 65239890207048823769, 1707524253811111768156 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A303254.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Cf. A303254.

Sequence in context: A302673 A230706 A302477 * A230738 A302386 A303107

Adjacent sequences: A303255 A303256 A303257 * A303259 A303260 A303261

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 20 2018

STATUS

approved

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Last modified February 8 08:32 EST 2023. Contains 360136 sequences. (Running on oeis4.)