A222800 Number of 7Xn 0..3 arrays with exactly floor(7Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

0, 11920, 589134, 80934417, 3723507945, 762956665320, 39461160617203, 8932502455950350, 507262993527434693, 126807825110575873512

Offset

1,2

Comments

Row 7 of A222794

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..1....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..1..2..1....0..0..0....0..0..0....0..0..1....0..1..2....0..0..0....0..1..2
..1..0..0....0..0..1....1..0..2....2..3..0....2..2..2....0..1..2....0..3..3
..0..0..0....0..1..1....3..0..1....0..0..0....2..2..0....3..1..2....0..3..0
..0..1..1....2..0..0....3..2..3....2..0..1....2..3..2....2..2..3....3..3..3

Crossrefs

Sequence in context: A342351 A186603 A346027 * A230680 A218458 A321157

Adjacent sequences: A222797 A222798 A222799 * A222801 A222802 A222803

Keyword

nonn

Author

R. H. Hardin Mar 05 2013

Status

approved