A206223 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing

81, 452, 452, 1970, 7313, 1970, 8128, 73133, 73133, 8128, 33386, 656053, 1782191, 656053, 33386, 139390, 5862927, 35625711, 35625711, 5862927, 139390, 588254, 53835891, 600064928, 1827047303, 600064928, 53835891, 588254, 2496440

Offset

1,1

Comments

Table starts

......81........452..........1970.............8128...............33386

.....452.......7313.........73133...........656053.............5862927

....1970......73133.......1782191.........35625711...........600064928

....8128.....656053......35625711.......1827047303.........74479700228

...33386....5862927.....600064928......74479700228.......7626209039519

..139390...53835891....9098547899....2537225006229.....656654900321262

..588254..499752207..131428029860...77008927829374...46954627739500046

.2496440.4654712482.1883474084204.2231343350258712.2857994610813268269

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

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

Crossrefs

Column 1 is A205208

Sequence in context: A253742 A204223 A205215 * A236669 A205208 A236664

Adjacent sequences: A206220 A206221 A206222 * A206224 A206225 A206226

Keyword

nonn,tabl

Author

R. H. Hardin Feb 04 2012

Status

approved