A284330 Number of n X 4 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

6, 34, 373, 5130, 70039, 1000935, 14581112, 215806808, 3229703988, 48741017873, 740325265021, 11303036259207, 173296776954307, 2666236456702222, 41141752932262310, 636440516858225998, 9866818127969621217

Offset

1,1

Comments

Column 4 of A284334.

Links

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

Example

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

Crossrefs

Cf. A284334.

Sequence in context: A337350 A245466 A362627 * A125759 A062819 A230246

Adjacent sequences: A284327 A284328 A284329 * A284331 A284332 A284333

Keyword

nonn

Author

R. H. Hardin, Mar 25 2017

Status

approved