A296404 Number of n X 7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 or 3 neighboring 1's.

1, 289, 4560, 110554, 3939121, 107541673, 3068113721, 90097748288, 2600708602697, 75199003513063, 2177790921375079, 63025869220333603, 1824132928895167966, 52797260271592457318, 1528116017845740163428

Offset

1,2

Comments

Column 7 of A296405.

Links

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

Example

Some solutions for n=4
..1..1..0..1..1..0..0. .0..0..0..0..1..1..0. .0..0..1..0..0..0..1
..1..0..1..1..0..1..1. .0..0..0..1..0..1..1. .0..1..1..1..0..1..1
..1..1..0..0..1..0..1. .0..1..1..0..0..1..0. .1..0..0..1..0..0..0
..1..0..0..1..1..1..0. .0..1..0..0..0..0..0. .1..1..1..1..0..0..0

Crossrefs

Cf. A296405.

Sequence in context: A152934 A332737 A156575 * A156161 A114762 A226747

Adjacent sequences: A296401 A296402 A296403 * A296405 A296406 A296407

Keyword

nonn

Author

R. H. Hardin, Dec 11 2017

Status

approved