OFFSET
1,1
COMMENTS
Column 6 of A206238
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +2571*a(n-3) -2571*a(n-4) for n>10
EXAMPLE
Some solutions for n=4
..0..0..1..0..0..1..0....0..0..1..0..0..1..0....0..0..1..0..0..1..2
..0..2..0..0..2..0..0....1..0..0..1..0..0..1....0..1..0..0..3..2..2
..1..0..0..2..0..0..2....2..3..0..0..1..0..0....2..0..0..3..2..2..1
..0..0..1..0..0..3..1....2..2..1..0..0..1..1....0..0..1..2..2..3..0
..3..3..0..0..2..1..1....3..2..2..3..0..1..2....3..3..2..2..3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 05 2012
STATUS
approved