A285746 Number of n X 4 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.

2, 44, 630, 8544, 125088, 1835412, 27339964, 410644956, 6209001966, 94379911740, 1441030936810, 22084845714940, 339564086313454, 5235658587223164, 80926601563138862, 1253589943179659024, 19456171723796564164

Offset

1,1

Comments

Column 4 of A285750.

Links

R. H. Hardin, Table of n, a(n) for n = 1..164

Example

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

Crossrefs

Cf. A285750.

Sequence in context: A123829 A242856 A035605 * A203606 A009620 A001627

Adjacent sequences: A285743 A285744 A285745 * A285747 A285748 A285749

Keyword

nonn

Author

R. H. Hardin, Apr 25 2017

Status

approved