A198511 T(n,k)=Number of 2nX2k 0..4 arrays with values 0..4 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors

4, 59, 59, 1626, 4666, 1626, 52065, 308854, 308854, 52065, 1720080, 23016128, 59007820, 23016128, 1720080, 57202471, 1768050096, 13127875861, 13127875861, 1768050096, 57202471, 1905005414, 137433138206, 3023133941944

Offset

1,1

Comments

Table starts

........4.........59........1626.......52065.......1720080.....57202471

.......59.......4666......308854....23016128....1768050096.137433138206

.....1626.....308854....59007820.13127875861.3023133941944

....52065...23016128.13127875861

..1720080.1768050096

.57202471

Links

Table of n, a(n) for n=1..24.

Example

Some solutions for n=3 k=2
0..1..1..0....0..1..0..2....0..1..1..2....0..1..1..0....0..1..1..0
2..3..3..4....2..1..0..0....1..3..3..1....1..2..2..3....2..3..3..1
2..3..3..4....2..1..1..1....1..3..3..1....1..2..2..3....2..3..3..1
4..4..4..2....0..3..3..3....2..2..2..2....2..3..3..2....0..4..4..3
3..3..4..2....0..3..4..4....0..0..1..1....2..3..3..2....0..4..4..3
0..3..4..3....2..3..4..2....2..0..1..0....4..0..0..1....2..1..1..0

Crossrefs

Sequence in context: A155204 A290765 A144992 * A282040 A245827 A200048

Adjacent sequences: A198508 A198509 A198510 * A198512 A198513 A198514

Keyword

nonn,tabl

Author

R. H. Hardin Oct 25 2011

Status

approved