A241135 Number of nX4 0..2 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..2 introduced in row major order

2, 17, 152, 1670, 19619, 238607, 2939027, 36470565, 454209512, 5665536042, 70725144550, 883230404813, 11031990457193, 137807268659287, 1721508492588267, 21505781617159089, 268661629731046770

Offset

1,1

Comments

Column 4 of A241138

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..1..1..1....0..0..0..1....0..0..0..1....0..0..1..1....0..0..1..1
..0..2..0..0....1..1..2..1....2..2..2..1....2..2..2..2....1..1..2..2
..0..2..1..1....2..2..2..2....0..2..0..0....0..1..1..1....0..2..0..1
..2..2..2..2....1..1..0..0....0..2..1..1....0..2..2..2....0..2..0..1

Crossrefs

Sequence in context: A295946 A176934 A126037 * A112321 A362477 A276198

Adjacent sequences: A241132 A241133 A241134 * A241136 A241137 A241138

Keyword

nonn

Author

R. H. Hardin, Apr 16 2014

Status

approved