A301353 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

8, 981, 39390, 1392131, 48476633, 1702789144, 59990521481, 2112136719464, 74331048515102, 2616023120767407, 92071029240759757, 3240450558843642214, 114047892100718342015, 4013922484956252317237, 141270244696020479378913

Offset

1,1

Comments

Column 7 of A301354.

Links

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

Example

Some solutions for n=5
..0..0..0..1..0..0..1. .0..0..0..0..1..1..0. .0..0..0..0..1..1..1
..0..1..1..0..1..1..0. .0..1..1..0..1..1..0. .0..1..1..0..0..0..0
..0..0..0..0..0..1..0. .0..0..0..0..0..0..0. .0..0..0..1..1..1..1
..0..1..1..1..0..0..1. .0..1..1..1..1..1..0. .0..1..0..1..0..0..1
..0..0..1..1..1..1..1. .0..1..0..0..1..1..1. .0..1..1..0..0..1..1

Crossrefs

Cf. A301354.

Sequence in context: A300426 A300688 A300611 * A183888 A181965 A159868

Adjacent sequences: A301350 A301351 A301352 * A301354 A301355 A301356

Keyword

nonn

Author

R. H. Hardin, Mar 19 2018

Status

approved