OFFSET
1,1
COMMENTS
Column 3 of A183508
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
FORMULA
Empirical: a(n)=27*a(n-1)+63909*a(n-6)-1725543*a(n-7)-274577850*a(n-12)+7413601950*a(n-13)-739973133990*a(n-18)+19979274617730*a(n-19)+454993983270891*a(n-24)-12284837548314057*a(n-25)+150094635296999121*a(n-30)-4052555153018976267*a(n-31)
EXAMPLE
Some solutions for 5X3
..0..2..2....0..0..0....0..0..0....0..0..0....2..0..0....2..2..2....0..0..2
..0..2..2....2..2..2....3..2..2....3..2..2....0..0..2....2..0..2....1..0..0
..1..1..3....2..1..3....2..0..3....2..2..3....0..3..1....2..0..3....2..2..1
..3..1..2....0..0..2....1..0..3....0..0..0....0..0..2....1..0..2....2..1..2
..2..1..1....3..2..2....2..2..2....3..0..3....2..0..0....0..2..1....1..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 05 2011
STATUS
approved