OFFSET
1,1
COMMENTS
Column 5 of A204630
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 460*a(n-1) -23188*a(n-2) +435694*a(n-3) -3658549*a(n-4) +11358936*a(n-5) +20419834*a(n-6) -191355445*a(n-7) +159553869*a(n-8) +865499344*a(n-9) -1132300188*a(n-10) -1371731191*a(n-11) +1522080017*a(n-12) +5670605*a(n-13) -262860202*a(n-14) +47382216*a(n-15)
EXAMPLE
Some solutions for n=3
..0..0..1..2..0..2....0..0..1..2..0..2....0..0..1..1..2..1....0..0..0..0..1..2
..1..0..2..2..2..1....2..0..2..2..0..1....0..1..1..2..2..2....2..2..1..2..1..1
..2..2..1..2..0..2....2..1..2..1..2..1....1..1..0..0..0..1....1..2..1..1..1..2
..2..0..0..0..0..1....0..2..2..1..1..0....2..1..0..1..2..0....1..0..1..2..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 17 2012
STATUS
approved