A207299 Number of (n+1)X6 0..3 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing

456043, 521236935, 380160979265, 308913308209090, 189688562729242206

Offset

1,1

Comments

Column 5 of A207300

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A237867 A234427 A205024 * A233926 A339429 A210402

Adjacent sequences: A207296 A207297 A207298 * A207300 A207301 A207302

Keyword

nonn

Author

R. H. Hardin Feb 16 2012

Status

approved