A221655 T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out left turns

0, 1, 0, 2, 4, 0, 4, 24, 12, 0, 8, 165, 230, 40, 0, 16, 1054, 5879, 2594, 136, 0, 32, 6862, 128076, 233781, 28478, 460, 0, 64, 44576, 2853634, 17254611, 9205038, 313721, 1556, 0, 128, 289789, 63318470, 1312503181, 2299842566, 361920243, 3449644, 5264, 0

Offset

1,4

Comments

Table starts

.0....1.......2.........4..........8.........16..........32.........64.....128

.0....4......24.......165.......1054.......6862.......44576.....289789.1883406

.0...12.....230......5879.....128076....2853634....63318470.1408047450

.0...40....2594....233781...17254611.1312503181.99007036296

.0..136...28478...9205038.2299842566

.0..460..313721.361920243

.0.1556.3449644

.0.5264

.0

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

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

Crossrefs

Sequence in context: A256487 A079985 A059226 * A221087 A279580 A197513

Adjacent sequences: A221652 A221653 A221654 * A221656 A221657 A221658

Keyword

nonn,tabl

Author

R. H. Hardin Jan 21 2013

Status

approved