A302874 Number of nX5 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

8, 31, 72, 306, 1197, 4849, 23037, 114810, 603229, 3319946, 18585700, 105379875, 603107047, 3467522323, 19998520262, 115602617979, 669078024352, 3875760664026, 22464758703891, 130258464383067, 755475828119163

Offset

1,1

Comments

Column 5 of A302877.

Links

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

Example

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

Crossrefs

Cf. A302877.

Sequence in context: A303037 A230386 A022273 * A061294 A240707 A115293

Adjacent sequences: A302871 A302872 A302873 * A302875 A302876 A302877

Keyword

nonn

Author

R. H. Hardin, Apr 15 2018

Status

approved