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A206221
Number of (n+1)X7 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing
0
139390, 53835891, 9098547899, 2537225006229, 656654900321262, 162241662044855141, 33632275642926148580, 5657294413089823562871
OFFSET
1,1
COMMENTS
Column 6 of A206223
EXAMPLE
Some solutions for n=4
..2..0..0..1..2..2..2....2..2..0..0..1..2..1....2..0..0..2..2..2..1
..1..0..0..0..0..0..0....2..0..0..0..1..2..1....1..0..0..2..2..2..1
..1..0..1..2..0..2..1....1..0..2..0..1..2..1....2..0..0..1..1..2..2
..1..0..1..2..0..0..0....1..0..1..0..1..2..1....1..0..0..1..2..0..2
..0..0..1..2..0..2..0....1..2..2..0..1..2..1....2..0..0..0..1..2..2
CROSSREFS
Sequence in context: A145207 A236745 A205213 * A028518 A206748 A018234
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 04 2012
STATUS
approved