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A221345 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2 6
1, 3, 1, 7, 19, 1, 17, 137, 137, 1, 41, 1033, 2856, 1001, 1, 99, 7877, 66077, 60807, 7305, 1, 239, 60223, 1534835, 4413085, 1299057, 53291, 1, 577, 460713, 36054361, 308965149, 299240982, 27767394, 388741, 1, 1393, 3524857, 849482126 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Table starts
.1.......3.........7..........17..........41..........99...........239
.1......19.......137........1033........7877.......60223........460713
.1.....137......2856.......66077.....1534835....36054361.....849482126
.1....1001.....60807.....4413085...308965149.22068912649.1581061669545
.1....7305...1299057...299240982.63149694983
.1...53291..27767394.20386200143
.1..388741.593562702
.1.2835697
.1
LINKS
EXAMPLE
Some solutions for n=3 k=4
..2..2..0..2....2..0..2..2....0..2..1..0....1..0..1..1....2..1..2..0
..0..2..0..2....0..2..2..2....1..0..2..0....0..2..2..2....1..1..0..0
..1..0..1..0....0..0..0..0....2..1..2..1....1..2..0..0....2..1..0..2
CROSSREFS
Column 2 is A221297
Row 1 is A001333
Row 2 is A221226
Sequence in context: A281525 A096643 A199656 * A036575 A347485 A073676
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 11 2013
STATUS
approved

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Last modified April 22 01:34 EDT 2024. Contains 371887 sequences. (Running on oeis4.)