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A203066
T(n,k)=Number of nXk 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor
9
1, 7, 7, 49, 455, 49, 252, 16625, 16625, 252, 1127, 491953, 3421817, 491953, 1127, 4977, 14623955, 608893191, 608893191, 14623955, 4977, 22736, 449303011, 111898706731, 647485600638, 111898706731, 449303011, 22736, 105813
OFFSET
1,2
COMMENTS
Table starts
......1............7.................49......................252
......7..........455..............16625...................491953
.....49........16625............3421817................608893191
....252.......491953..........608893191.............647485600638
...1127.....14623955.......111898706731..........710826096063039
...4977....449303011.....20929382959987.......791448514067936533
..22736..13830934581...3898031053158067....877818049790930479334
.105813.423540231589.724530008223344653.972407155723593469149291
LINKS
EXAMPLE
Some solutions for n=5 k=3
..4..2..1....2..4..1....4..6..2....2..0..6....5..0..6....1..6..5....5..6..2
..6..2..3....4..4..4....5..6..1....2..2..6....5..6..6....1..6..5....1..6..5
..6..4..5....1..6..2....1..2..3....2..4..0....1..2..3....3..3..4....4..1..3
..3..5..5....3..6..1....5..0..6....1..4..5....5..3..5....4..5..1....4..1..6
..3..5..3....0..6..1....5..0..6....0..3..5....5..3..5....0..5..4....6..6..6
CROSSREFS
Sequence in context: A245132 A222462 A214887 * A165425 A220079 A153272
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Dec 28 2011
STATUS
approved