OFFSET
1,2
COMMENTS
Row 3 of A189650
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = 10*a(n-1) +75*a(n-2) -240*a(n-3) -399*a(n-4) +972*a(n-5) -1263*a(n-6) +482*a(n-7) +669*a(n-8) -100*a(n-9) -9*a(n-10)
EXAMPLE
Some solutions for 3X3
..1..5..2....1..0..2....4..0..2....0..2..1....0..2..4....0..1..2....1..0..4
..3..0..4....3..6..5....7..3..1....4..6..5....1..3..5....3..4..5....7..2..5
..7..6..8....4..7..8....6..5..8....7..3..8....7..6..8....7..6..8....6..3..8
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 24 2011
STATUS
approved