A221240 T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops

0, 0, 0, 0, 5, 0, 0, 53, 53, 0, 0, 467, 1979, 467, 0, 0, 3913, 67710, 67710, 3913, 0, 0, 32299, 2217402, 8959341, 2217402, 32299, 0, 0, 265353, 71862107, 1130617545, 1130617545, 71862107, 265353, 0, 0, 2176758, 2319920239, 141336723259

Offset

1,5

Comments

Table starts

.0........0...........0..............0...............0...............0

.0........5..........53............467............3913...........32299

.0.......53........1979..........67710.........2217402........71862107

.0......467.......67710........8959341......1130617545....141336723259

.0.....3913.....2217402.....1130617545....543708183481.258758829845879

.0....32299....71862107...141336723259.258758829845879

.0...265353..2319920239.17607272065860

.0..2176758.74798189113

.0.17847997

.0

Links

R. H. Hardin, Table of n, a(n) for n = 1..60

Example

Some solutions for n=3 k=4
..1..1..0..1....0..2..1..1....0..1..0..0....0..0..0..1....0..3..1..1
..2..0..4..2....0..1..5..2....1..3..0..3....2..1..4..1....0..0..3..1
..1..0..0..0....0..0..0..0....0..1..2..1....1..0..1..1....0..1..1..1

Crossrefs

Sequence in context: A075534 A221361 A083527 * A113038 A082512 A068385

Adjacent sequences: A221237 A221238 A221239 * A221241 A221242 A221243

Keyword

nonn,tabl

Author

R. H. Hardin Jan 06 2013

Status

approved