A301406 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

64, 8192, 975492, 117605364, 14160945920, 1705287652128, 205353183605152, 24728921469216800, 2977891883234338384, 358601972693344501136, 43183359211755735932560, 5200201490023385537322336

Offset

1,1

Comments

Column 7 of A301407.

Links

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

R. H. Hardin, Empirical recurrence of order 45

Formula

Empirical recurrence of order 45 (see link above)

Example

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

Crossrefs

Cf. A301407.

Sequence in context: A299653 A300207 A303420 * A303426 A317516 A300181

Adjacent sequences: A301403 A301404 A301405 * A301407 A301408 A301409

Keyword

nonn

Author

R. H. Hardin, Mar 20 2018

Status

approved