A285751 Number of 2 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, 4, 8, 44, 150, 540, 2042, 7760, 29654, 114336, 442152, 1713832, 6655764, 25893236, 100873154, 393455752, 1536357188, 6005069488, 23492496948, 91979426392, 360391230046, 1413045432264, 5543910852492, 21763924972776, 85487754197390

Offset

1,2

Comments

Row 2 of A285750.

Links

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

Example

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

Crossrefs

Cf. A285750.

Sequence in context: A284972 A045639 A337782 * A189538 A351071 A270352

Adjacent sequences: A285748 A285749 A285750 * A285752 A285753 A285754

Keyword

nonn

Author

R. H. Hardin, Apr 25 2017

Status

approved