A285752 Number of 3 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.

0, 14, 105, 630, 4850, 31276, 250592, 1727836, 13831303, 99330350, 789537708, 5828000730, 46064702150, 346391183886, 2727741658914, 20778683750294, 163289874109963, 1255321900392396, 9855914786067634, 76271581305888386

Offset

1,2

Comments

Row 3 of A285750.

Links

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

Example

Some solutions for n=4
..0..0..0..0. .0..0..0..0. .1..1..1..0. .0..0..1..1. .0..1..1..0
..1..0..1..1. .0..0..1..1. .1..0..1..0. .0..0..1..1. .1..0..0..0
..1..0..1..0. .1..1..1..0. .0..1..0..0. .0..1..1..0. .0..0..1..1

Crossrefs

Cf. A285750.

Sequence in context: A341226 A022579 A061179 * A076128 A206761 A190868

Adjacent sequences: A285749 A285750 A285751 * A285753 A285754 A285755

Keyword

nonn

Author

R. H. Hardin, Apr 25 2017

Status

approved