A300104 Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

2, 52, 226, 1041, 5526, 29439, 150416, 781647, 4082439, 21222937, 110388099, 574756967, 2991427381, 15568650875, 81036181631, 421794216427, 2195417598827, 11427201537107, 59479013183583, 309590293053773, 1611431130841749

Offset

1,1

Comments

Column 4 of A300108.

Links

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

R. H. Hardin, Empirical recurrence of order 67

Formula

Empirical recurrence of order 67 (see link above)

Example

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

Crossrefs

Cf. A300108.

Sequence in context: A298385 A299303 A299461 * A034311 A053317 A123803

Adjacent sequences: A300101 A300102 A300103 * A300105 A300106 A300107

Keyword

nonn

Author

R. H. Hardin, Feb 25 2018

Status

approved