A297990 Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

3, 166, 424, 1446, 5100, 18189, 62390, 213997, 735000, 2520806, 8673171, 29895212, 103062319, 355448168, 1226378689, 4232831248, 14614818621, 50474934066, 174362780682, 602441004444, 2081828199132, 7195055390173, 24869853343749

Offset

1,1

Comments

Column 5 of A297993.

Links

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

R. H. Hardin, Empirical recurrence of order 99

Formula

Empirical recurrence of order 99 (see link above)

Example

Some solutions for n=7
..0..1..1..0..0. .0..0..1..0..0. .0..1..1..1..0. .0..0..1..0..0
..0..1..0..1..1. .1..1..1..1..1. .1..0..0..0..1. .1..0..1..0..1
..0..1..0..1..0. .0..0..0..0..0. .1..1..1..1..0. .1..1..1..0..1
..0..1..0..1..0. .0..1..1..1..0. .0..0..0..0..1. .1..0..1..0..1
..1..0..1..0..1. .1..0..0..0..1. .0..1..1..1..0. .1..0..1..0..1
..1..0..1..0..1. .0..1..1..0..1. .1..0..0..0..1. .1..0..1..0..1
..0..0..1..1..0. .0..0..0..1..1. .0..1..1..0..1. .1..1..0..0..1

Crossrefs

Cf. A297993.

Sequence in context: A020545 A228193 A297820 * A298843 A298650 A299604

Adjacent sequences: A297987 A297988 A297989 * A297991 A297992 A297993

Keyword

nonn

Author

R. H. Hardin, Jan 10 2018

Status

approved