OFFSET
1,1
COMMENTS
Column 1 of A252192
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = -a(n-1) +14*a(n-3) +14*a(n-4) +a(n-5) -76*a(n-6) -77*a(n-7) -13*a(n-8) +199*a(n-9) +212*a(n-10) +65*a(n-11) -243*a(n-12) -308*a(n-13) -159*a(n-14) +65*a(n-15) +224*a(n-16) +202*a(n-17) +138*a(n-18) -64*a(n-19) -128*a(n-20) -128*a(n-21) +32*a(n-23) +32*a(n-24) for n>30
EXAMPLE
Some solutions for n=4
..1..2..0....1..2..3....2..1..0....2..2..3....3..1..3....3..2..1....3..1..2
..1..3..2....0..0..0....3..3..0....1..2..0....2..0..1....2..2..3....0..0..3
..1..1..1....2..1..3....1..2..0....0..3..0....1..0..2....2..2..3....3..2..1
..1..2..0....1..2..3....2..1..0....2..1..0....3..0..3....3..3..0....0..1..2
..1..3..2....0..0..0....3..3..0....1..2..3....2..0..1....2..2..3....3..3..0
..1..1..1....2..1..3....2..2..3....0..0..0....2..3..2....2..1..3....3..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 15 2014
STATUS
approved