OFFSET
1,1
COMMENTS
Column 7 of A205626
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..66
FORMULA
Empirical: a(n) = 1032*a(n-2) +144*a(n-3) -3000*a(n-4) -29184*a(n-5) -260224*a(n-6) -294912*a(n-7) -12539904*a(n-8) -218824704*a(n-10) -2415919104*a(n-12) for n>13
EXAMPLE
Some solutions for n=4
..0..0..0..0..0..0..1..1....0..0..1..1..1..1..0..0....0..0..1..2..0..0..1..2
..1..1..1..1..1..2..2..0....0..1..1..2..1..2..1..0....1..2..1..2..1..2..1..0
..0..1..2..1..2..2..0..1....2..2..0..0..0..2..1..2....0..1..0..1..0..1..0..2
..0..1..0..0..0..1..0..2....2..0..1..0..1..0..2..2....0..1..2..2..2..1..0..1
..0..0..2..0..2..0..2..1....1..0..2..2..1..0..1..0....0..0..1..2..0..2..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 29 2012
STATUS
approved