A304666 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

8, 53, 66, 249, 832, 1926, 5311, 15604, 41101, 113581, 322499, 878867, 2424634, 6783680, 18692607, 51620360, 143530053, 396942014, 1097506347, 3043745061, 8426485347, 23316586078, 64599682220, 178884708707, 495183784333

Offset

1,1

Comments

Column 5 of A304669.

Links

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

Example

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

Crossrefs

Cf. A304669.

Sequence in context: A304928 A305344 A316612 * A306169 A316424 A317426

Adjacent sequences: A304663 A304664 A304665 * A304667 A304668 A304669

Keyword

nonn

Author

R. H. Hardin, May 16 2018

Status

approved