OFFSET
1,1
COMMENTS
Column 4 of A252148
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-2) +3*a(n-3) +a(n-4) -3*a(n-5) +4*a(n-6) -3*a(n-7) +3*a(n-8) -15*a(n-9) -6*a(n-11) +2*a(n-12) +3*a(n-13) -a(n-14) +9*a(n-15) -a(n-16) +9*a(n-17) -4*a(n-18) -3*a(n-20) +3*a(n-21) -a(n-24) for n>31
EXAMPLE
Some solutions for n=4
..2..2..3..0..0..0....2..1..3..1..2..3....0..1..2..0..1..2....2..3..0..0..3..0
..3..1..2..3..1..2....0..3..0..3..0..2....3..2..1..0..2..1....1..2..3..1..2..3
..0..2..1..0..2..1....3..1..3..1..3..1....0..3..0..0..0..0....2..1..0..2..1..0
..0..0..3..0..0..3....0..3..0..3..0..2....0..1..2..0..1..2....0..0..0..0..3..0
..3..1..2..3..1..1....3..1..3..1..3..3....0..2..1..3..2..1....1..2..0..1..2..3
..0..2..1..0..2..1....3..2..0..3..0..2....0..0..0..0..3..0....2..1..0..2..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 14 2014
STATUS
approved