A318347 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

8, 11, 21, 29, 62, 136, 279, 624, 1344, 2941, 6444, 14202, 31437, 69791, 155037, 344892, 766957, 1706073, 3794544, 8440354, 18771770, 41756133, 92878060, 206605597, 459593314, 1022399772, 2274386877, 5059572712, 11255394242

Offset

1,1

Comments

Column 5 of A318350.

Links

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

Example

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

Crossrefs

Cf. A318350.

Sequence in context: A347757 A368356 A291664 * A195160 A053701 A029615

Adjacent sequences: A318344 A318345 A318346 * A318348 A318349 A318350

Keyword

nonn

Author

R. H. Hardin, Aug 24 2018

Status

approved