A223039 Number of nX4 0..3 arrays with no more than floor(nX4/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order

11, 1265, 229437, 42964721, 8206670940, 1590576924149, 311543161837482, 61504928367575855, 12217149892788877445, 2438751075983097268086, 488783777099597628446445, 98294363180577784998680559

Offset

1,1

Comments

Column 4 of A223041

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

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

Crossrefs

Sequence in context: A266368 A182553 A340293 * A209093 A078274 A013716

Adjacent sequences: A223036 A223037 A223038 * A223040 A223041 A223042

Keyword

nonn

Author

R. H. Hardin Mar 12 2013

Status

approved