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A284195 Number of nX4 0..1 arrays with the number of 1s horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0s adjacent to some 1, with top left element zero. 1
6, 40, 412, 5268, 71181, 1001047, 14392557, 210449237, 3113715736, 46513546197, 700181791562, 10607318574496, 161549350874286, 2471455506147877, 37954136853757557, 584775548813145717, 9035444086858648868 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A284199.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..207

EXAMPLE

Some solutions for n=4

..0..1..0..1. .0..0..1..1. .0..0..0..0. .0..0..0..0. .0..0..0..0

..0..0..0..1. .1..1..0..0. .0..0..0..1. .1..0..1..1. .1..1..0..0

..0..0..1..0. .0..1..1..0. .0..1..1..0. .0..1..1..0. .1..1..0..0

..1..1..1..1. .0..0..1..1. .1..1..0..1. .0..1..1..1. .1..1..1..1

CROSSREFS

Cf. A284199.

Sequence in context: A000683 A143342 A084270 * A053677 A204563 A196449

Adjacent sequences:  A284192 A284193 A284194 * A284196 A284197 A284198

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 22 2017

STATUS

approved

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Last modified February 21 03:06 EST 2019. Contains 320364 sequences. (Running on oeis4.)