A301442 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

64, 8192, 682084, 62956480, 5777358820, 531234388944, 48849438137664, 4492116306943692, 413089268497224392, 37987202449871223276, 3493258870390322650124, 321236024255689780316508

Offset

1,1

Comments

Column 7 of A301443.

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

Crossrefs

Cf. A301443.

Sequence in context: A300803 A303455 A303461 * A302014 A302009 A301783

Adjacent sequences: A301439 A301440 A301441 * A301443 A301444 A301445

Keyword

nonn

Author

R. H. Hardin, Mar 21 2018

Status

approved