A298708 Number of nX4 0..1 arrays with every element equal to 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 13, 2, 11, 32, 87, 110, 385, 908, 2760, 6454, 17925, 51777, 141793, 378486, 1095621, 3060776, 8412703, 23884402, 67448745, 187193308, 529617392, 1496665754, 4179115507, 11797048913, 33344442453, 93407406180, 263365123043

Offset

1,2

Comments

Column 4 of A298712.

Links

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

R. H. Hardin, Empirical recurrence of order 70

Formula

Empirical recurrence of order 70 (see link above)

Example

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

Crossrefs

Cf. A298712.

Sequence in context: A070704 A317753 A298059 * A367936 A124686 A113807

Adjacent sequences: A298705 A298706 A298707 * A298709 A298710 A298711

Keyword

nonn

Author

R. H. Hardin, Jan 25 2018

Status

approved