A285155 Number of 4 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, 56, 786, 11574, 159060, 2284666, 33371602, 495256266, 7426444716, 112236717358, 1706444466326, 26070175620594, 399870502837122, 6153779131538066, 94972379110894900, 1469319459956729810

Offset

1,2

Comments

Row 4 of A285152.

Links

R. H. Hardin, Table of n, a(n) for n = 1..176

Example

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

Crossrefs

Cf. A285152.

Sequence in context: A105940 A175602 A227059 * A278197 A182866 A008389

Adjacent sequences: A285152 A285153 A285154 * A285156 A285157 A285158

Keyword

nonn

Author

R. H. Hardin, Apr 12 2017

Status

approved