OFFSET
1,1
COMMENTS
Column 4 of A185521
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=61*a(n-1)-1038*a(n-2)-2374*a(n-3)+235515*a(n-4)-2269967*a(n-5)+4091988*a(n-6)+57111048*a(n-7)-371380096*a(n-8)+662678992*a(n-9)+937755776*a(n-10)-4856175360*a(n-11)+5080858624*a(n-12)+506806272*a(n-13)-2361655296*a(n-14)
EXAMPLE
Some solutions for 3X5
..2..1..2..1..0....0..0..0..2..1....1..0..2..2..2....0..2..1..1..1
..0..0..0..0..0....1..0..0..0..0....0..0..0..0..0....0..0..0..0..0
..0..1..0..1..1....0..0..0..1..0....0..0..2..1..2....2..2..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 29 2011
STATUS
approved