OFFSET
1,1
COMMENTS
Row 4 of A223357.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 144*a(n-1) -3840*a(n-2) +24576*a(n-3) for n>7.
EXAMPLE
Some solutions for n=3
..0..3..0....0..3..0....0..3..0....0..3..0....0..3..0....0..3..0....0..3..0
..4..3..5....0..4..3....4..2..1....5..1..2....0..2..5....5..3..4....0..4..3
..4..2..4....0..4..2....5..3..1....0..1..3....0..2..0....0..3..1....2..5..1
..1..2..4....3..1..3....5..2..4....3..1..0....4..2..4....5..3..4....1..5..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 19 2013
STATUS
approved