A205027 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards

256, 2338, 2338, 15040, 27611, 15040, 84899, 275853, 275853, 84899, 456043, 3684581, 7148335, 3684581, 456043, 2470216, 56088455, 198539736, 198539736, 56088455, 2470216, 13615376, 888172440, 5296848762, 11646996582, 5296848762

Offset

1,1

Comments

Table starts

......256.........2338..........15040..............84899................456043

.....2338........27611.........275853............3684581..............56088455

....15040.......275853........7148335..........198539736............5296848762

....84899......3684581......198539736........11646996582..........674941613200

...456043.....56088455.....5296848762.......674941613200........69845358912381

..2470216....888172440...139786868632.....42501311863619......8486771114466915

.13615376..14267356381..3650380799573...2691721552273415....932371404894182926

.76027865.230651852383.95296479247095.175740162358914695.109561074506695905962

Links

R. H. Hardin, Table of n, a(n) for n = 1..127

Example

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

Crossrefs

Sequence in context: A014713 A205642 A205635 * A207300 A205020 A204309

Adjacent sequences: A205024 A205025 A205026 * A205028 A205029 A205030

Keyword

nonn,tabl

Author

R. H. Hardin Jan 21 2012

Status

approved