OFFSET
1,1
COMMENTS
Column 3 of A252334
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 58*a(n-3) -1122*a(n-6) +10005*a(n-9) -54999*a(n-12) +226911*a(n-15) -741086*a(n-18) +1816623*a(n-21) -3182005*a(n-24) +3900573*a(n-27) -3282696*a(n-30) +1827728*a(n-33) -630683*a(n-36) +121014*a(n-39) -10608*a(n-42) +288*a(n-45) for n>50
EXAMPLE
Some solutions for n=4
..3..0..2..3..3....2..3..3..2..3....0..3..2..3..1....2..3..3..2..0
..0..3..2..3..3....2..2..2..1..2....3..3..2..0..3....1..2..2..1..2
..2..2..1..2..2....2..0..3..2..3....2..2..1..2..2....2..3..0..2..3
..3..3..2..3..0....2..3..0..2..3....3..3..2..3..3....2..0..3..2..3
..0..3..2..3..3....1..2..2..1..2....3..3..2..0..3....1..2..2..1..2
..2..2..1..2..2....2..0..3..2..1....2..2..1..2..2....2..3..3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 16 2014
STATUS
approved