A299124 Number of nX4 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

5, 16, 23, 232, 623, 3368, 20226, 95305, 517446, 2849177, 14996918, 80878846, 438307578, 2350137185, 12666447836, 68352017686, 367891360100, 1982533944388, 10686608415147, 57568972855703, 310217349581539, 1671740619224755

Offset

1,1

Comments

Column 4 of A299128.

Links

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

R. H. Hardin, Empirical recurrence of order 66

Formula

Empirical recurrence of order 66 (see link above)

Example

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

Crossrefs

Cf. A299128.

Sequence in context: A031120 A029450 A225539 * A278415 A063243 A063232

Adjacent sequences: A299121 A299122 A299123 * A299125 A299126 A299127

Keyword

nonn

Author

R. H. Hardin, Feb 03 2018

Status

approved