A300503 Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

8, 6, 6, 32, 56, 208, 546, 2006, 5835, 18466, 58308, 186335, 582625, 1860566, 5858450, 18630807, 58838581, 186793554, 590956811, 1873885918, 5932477246, 18802162085, 59546364960, 188676223980, 597626466721, 1893415121389, 5997783554269

Offset

1,1

Comments

Column 5 of A300506.

Links

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

Example

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

Crossrefs

Cf. A300506.

Sequence in context: A218197 A181048 A199873 * A153791 A004497 A091899

Adjacent sequences: A300500 A300501 A300502 * A300504 A300505 A300506

Keyword

nonn

Author

R. H. Hardin, Mar 07 2018

Status

approved