A303524 Number of n X 7 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

21, 363, 916, 8676, 87730, 1052163, 15768709, 260078546, 4544413190, 82599711087, 1526885636233, 28491618817054, 534696956123707, 10062547249007546, 189657515521907356, 3577798561319688546, 67524490517322243151

Offset

1,1

Comments

Column 7 of A303525.

Links

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

Example

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

Crossrefs

Cf. A303525.

Sequence in context: A302308 A303039 A302876 * A108495 A178351 A324360

Adjacent sequences: A303521 A303522 A303523 * A303525 A303526 A303527

Keyword

nonn

Author

R. H. Hardin, Apr 25 2018

Status

approved