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A208872
T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors
14
1, 2, 2, 5, 12, 5, 15, 136, 143, 15, 51, 1798, 6520, 1979, 51, 187, 24472, 307165, 324682, 28246, 187, 715, 334618, 14493405, 52947540, 16205218, 405481, 715, 2795, 4578580, 683903931, 8624977114, 9130195864, 808928836, 5826959, 2795, 11051, 62655190
OFFSET
1,2
COMMENTS
Table starts
....1........2.............5................15.....................51
....2.......12...........136..............1798..................24472
....5......143..........6520............307165...............14493405
...15.....1979........324682..........52947540.............8624977114
...51....28246......16205218........9130195864..........5134914951163
..187...405481.....808928836.....1574432811027.......3057224057476808
..715..5826959...40380275500...271499374919883....1820216057105650386
.2795.83752328.2015711853262.46818078167209471.1083724145919960847502
LINKS
EXAMPLE
Some solutions for n=4 k=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..1..0
..1..1..2....1..1..0....1..1..0....1..1..1....1..2..3....1..1..1....0..2..2
..2..1..1....2..1..1....2..2..1....2..2..0....3..0..1....2..0..2....1..3..1
..0..2..1....2..2..1....0..1..3....1..0..1....2..3..2....2..1..0....1..3..2
CROSSREFS
Column 1 and row 1 are A007581(n-1)
Sequence in context: A230090 A286465 A208258 * A208581 A233357 A248664
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 02 2012
STATUS
approved