A302823 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

16, 264, 1852, 9050, 57684, 455224, 3252934, 21373833, 145065338, 1024549954, 7170151664, 49379386783, 340925402218, 2370116273859, 16472723703661, 114177004773459, 791323930643328, 5490513439183975, 38101196990376782

Offset

1,1

Comments

Row 5 of A302820.

Links

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

Example

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

Crossrefs

Cf. A302820.

Sequence in context: A303185 A302326 A303019 * A303516 A240481 A180809

Adjacent sequences: A302820 A302821 A302822 * A302824 A302825 A302826

Keyword

nonn

Author

R. H. Hardin, Apr 13 2018

Status

approved