A207300 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing

256, 2338, 2338, 15040, 93991, 15040, 84899, 2019514, 2019514, 84899, 456043, 33860323, 158967751, 33860323, 456043, 2470216, 521236935, 8967460486, 8967460486, 521236935, 2470216, 13615376, 8125554503, 380160979265

Offset

1,1

Comments

Table starts

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

.....2338.........93991.........2019514..........33860323..........521236935

....15040.......2019514.......158967751........8967460486.......380160979265

....84899......33860323......8967460486.....1951282415919....308913308209090

...456043.....521236935....380160979265...308913308209090.189688562729242206

..2470216....8125554503..12920283700575.37170163306466234

.13615376..129766993681.373780805511860

.76027865.2097529018861

Links

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

Example

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

Crossrefs

Column 1 is A205020

Sequence in context: A205642 A205635 A205027 * A205020 A204309 A235416

Adjacent sequences: A207297 A207298 A207299 * A207301 A207302 A207303

Keyword

nonn,tabl

Author

R. H. Hardin Feb 16 2012

Status

approved