A304138 Number of nX5 0..1 arrays with every element unequal to 0, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

1, 26, 15, 20, 39, 83, 135, 356, 967, 1769, 4507, 12371, 26399, 63179, 165527, 395372, 931693, 2375263, 6054813, 14584383, 36884172, 96563393, 240916042, 612770703, 1617727061, 4165995075, 10744297142, 28487711557, 75039015902, 196719916483

Offset

1,2

Comments

Column 5 of A304141.

Links

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

R. H. Hardin, Empirical recurrence of order 91

Formula

Empirical recurrence of order 91 (see link above)

Example

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

Crossrefs

Cf. A304141.

Sequence in context: A078547 A036168 A005606 * A305044 A064267 A131083

Adjacent sequences: A304135 A304136 A304137 * A304139 A304140 A304141

Keyword

nonn

Author

R. H. Hardin, May 07 2018

Status

approved