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A301530 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 304, 7640, 339956, 14890200, 681538595, 31363814530, 1449439465725, 67069319310675, 3105774311254509, 143847525643175638, 6663123840652391073, 308649484519717755352, 14297467051864049996062, 662299666745948218632443 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A301531.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301531.

Sequence in context: A300538 A300965 A300922 * A172228 A281329 A293092

Adjacent sequences: A301527 A301528 A301529 * A301531 A301532 A301533

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 23 2018

STATUS

approved

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Last modified January 30 19:10 EST 2023. Contains 359947 sequences. (Running on oeis4.)