A302430 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

16, 21, 51, 148, 372, 1359, 4223, 12765, 36991, 120577, 379049, 1163511, 3513789, 11057011, 34615371, 107067003, 328256519, 1021668031, 3184852651, 9877177123, 30474354613, 94542321045, 293938006889, 912146326937, 2822284649841

Offset

1,1

Comments

Row 5 of A302427.

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..0..1. .0..0..1..1..0
..0..1..0..1..0. .0..1..0..1..0. .1..0..0..0..0. .0..1..0..1..0
..0..1..0..1..0. .0..1..0..1..0. .1..0..1..0..1. .0..1..0..1..0
..0..1..0..1..1. .0..1..1..1..0. .1..0..1..1..0. .0..1..0..1..1
..0..1..0..1..0. .0..1..0..0..0. .1..1..0..1..0. .1..0..0..1..0

Crossrefs

Cf. A302427.

Sequence in context: A302167 A186454 A302638 * A138173 A302313 A303200

Adjacent sequences: A302427 A302428 A302429 * A302431 A302432 A302433

Keyword

nonn

Author

R. H. Hardin, Apr 07 2018

Status

approved