OFFSET
1,1
COMMENTS
Column 5 of A184694
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=171*a(n-1)-3370*a(n-2)+29805*a(n-3)-149108*a(n-4)+447784*a(n-5)-778496*a(n-6)+649216*a(n-7)-114688*a(n-8)
EXAMPLE
Some solutions for 3X5 with a(1,1)=0
..0..1..2..1..0....0..0..0..1..0....0..0..0..2..1....0..1..1..1..0
..0..1..0..2..1....0..2..0..2..2....0..1..2..0..0....0..1..0..1..1
..0..1..1..0..2....0..2..1..0..2....0..2..0..2..0....0..1..0..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 20 2011
STATUS
approved