A285154 Number of 3 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.

0, 12, 113, 820, 5773, 41620, 305641, 2274080, 17114289, 129576988, 987231526, 7551235806, 57992581744, 446683948074, 3450295188177, 26710836161850, 207217760171898, 1610393410029550, 12535446041119817, 97715224210141008

Offset

1,2

Comments

Row 3 of A285152.

Links

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

Example

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

Crossrefs

Cf. A285152.

Sequence in context: A268767 A221368 A083767 * A153882 A357650 A322649

Adjacent sequences: A285151 A285152 A285153 * A285155 A285156 A285157

Keyword

nonn

Author

R. H. Hardin, Apr 12 2017

Status

approved