A297950 Number of n X 7 0..1 arrays with every element equal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero.

8, 2048, 11614, 88441, 750733, 6423236, 53630550, 451993176, 3822668362, 32280441976, 272629391142, 2304614292374, 19479506089623, 164635199364476, 1391603138141113, 11763053589275172, 99430718267953488, 840477009021797422

Offset

1,1

Comments

Column 7 of A297951.

Links

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

Example

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

Crossrefs

Cf. A297951.

Sequence in context: A024112 A092414 A295217 * A298559 A298769 A299566

Adjacent sequences: A297947 A297948 A297949 * A297951 A297952 A297953

Keyword

nonn

Author

R. H. Hardin, Jan 09 2018

Status

approved