login
A284195
Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0's 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
OFFSET
1,1
COMMENTS
Column 4 of A284199.
LINKS
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: A352357 A143342 A084270 * A053677 A204563 A356540
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 22 2017
STATUS
approved