A222675 Number of nX4 0..3 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order

4, 10, 58, 527, 8276, 133028, 2363628, 40206464, 727306856, 12525102179, 225526086320, 3916711645116, 70238669794180, 1227292294581568, 21942415435228510, 385251466640023275, 6872913615981792520

Offset

1,1

Comments

Column 4 of A222679

Links

R. H. Hardin, Table of n, a(n) for n = 1..87

Example

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

Crossrefs

Sequence in context: A104363 A092190 A328036 * A328155 A209030 A220824

Adjacent sequences: A222672 A222673 A222674 * A222676 A222677 A222678

Keyword

nonn

Author

R. H. Hardin Feb 28 2013

Status

approved