A298657 Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

3, 23, 23, 85, 177, 431, 876, 2137, 5002, 11687, 27591, 64253, 150967, 353682, 830580, 1954490, 4575013, 10742553, 25221766, 59150366, 138829820, 325959550, 764905062, 1795278490, 4214144288, 9890202526, 23212413440, 54483362577

Offset

1,1

Comments

Column 5 of A298660.

Links

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

Example

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

Crossrefs

Cf. A298660.

Sequence in context: A298090 A298052 A298885 * A299609 A238198 A178177

Adjacent sequences: A298654 A298655 A298656 * A298658 A298659 A298660

Keyword

nonn

Author

R. H. Hardin, Jan 24 2018

Status

approved