A222982 Number of nX4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order

4, 25, 314, 4572, 68385, 1037326, 15904038, 245900395, 3827698634, 59908716776, 941887270541, 14864346253334, 235333007557546, 3736059988845399, 59453991638435810, 948103358514285732, 15147172497271220257

Offset

1,1

Comments

Column 4 of A222986

Links

R. H. Hardin, Table of n, a(n) for n = 1..205

Example

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

Crossrefs

Sequence in context: A374851 A350585 A238510 * A259591 A093959 A308476

Adjacent sequences: A222979 A222980 A222981 * A222983 A222984 A222985

Keyword

nonn

Author

R. H. Hardin Mar 11 2013

Status

approved