OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..39
EXAMPLE
Some positive determinant 3X3 1..2 matrices
..2..2..2....2..2..1....2..2..1....2..2..1....1..1..2....2..1..2....2..2..2
..2..1..1....2..1..2....1..2..1....1..2..1....2..1..1....2..1..1....2..2..1
..2..2..1....2..1..1....2..1..2....2..2..2....1..1..1....1..2..1....1..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 02 2011
STATUS
approved