OFFSET
1,1
COMMENTS
Column 3 of A251845
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 32*a(n-3) -310*a(n-6) +1096*a(n-9) -1790*a(n-12) +1558*a(n-15) -803*a(n-18) +238*a(n-21) -20*a(n-24) for n>33
EXAMPLE
Some solutions for n=4
..0..0..1..0..0....3..0..1..0..3....1..1..2..1..1....0..0..1..3..0
..1..1..2..1..1....1..1..2..1..1....3..0..1..0..0....1..1..2..1..1
..0..0..1..0..0....0..3..1..0..0....0..0..1..0..3....0..0..1..0..0
..3..0..1..3..0....0..0..1..0..3....1..1..2..1..1....0..3..1..0..0
..1..1..2..1..1....1..1..2..1..1....0..0..1..3..0....1..1..2..1..1
..0..0..1..0..3....3..0..1..0..0....3..0..1..0..0....0..0..1..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2014
STATUS
approved