OFFSET
1,1
COMMENTS
Column 4 of A203934
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 91*a(n-1) +7335*a(n-2) -264625*a(n-3) -85500*a(n-4) +10470000*a(n-5) +2475000*a(n-6) -20750000*a(n-7)
EXAMPLE
Some solutions for n=4
..0..3..3..1..5....1..1..4..4..5....5..2..4..2..5....5..5..3..3..4
..4..0..3..3..1....1..5..1..4..4....2..1..2..4..2....1..5..5..3..3
..2..4..0..3..3....1..1..5..1..4....1..5..1..2..4....1..1..5..5..3
..2..2..4..0..3....4..1..1..1..1....4..1..3..1..2....0..1..1..5..5
..4..2..2..4..0....3..4..1..2..1....1..5..1..4..1....4..0..1..1..5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2012
STATUS
approved