A222799 Number of 6Xn 0..3 arrays with exactly floor(6Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

0, 1883, 92642, 3315998, 163288090, 8113737592, 441448848458, 25312950712971, 1552439861168400, 100407626852665785

Offset

1,2

Comments

Row 6 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..1..1....0..0..0....0..0..0....0..0..1
..0..1..0....0..0..1....0..0..1....1..1..1....0..0..1....0..0..0....2..0..0
..2..3..0....2..2..3....2..1..3....1..1..1....2..3..3....1..0..0....0..0..0
..1..0..0....3..1..1....2..3..3....1..1..1....2..3..3....0..0..0....1..0..2
..0..0..0....2..1..1....3..3..3....0..1..2....0..2..2....2..0..1....2..2..2
..0..0..0....1..1..1....3..3..2....2..2..0....2..2..2....1..0..0....2..2..2

Crossrefs

Sequence in context: A260137 A246478 A237103 * A252111 A259960 A338705

Adjacent sequences: A222796 A222797 A222798 * A222800 A222801 A222802

Keyword

nonn

Author

R. H. Hardin Mar 05 2013

Status

approved