OFFSET
1,1
COMMENTS
Column 1 of A238311.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 1419*a(n-4) +36268*a(n-6) +410501*a(n-8) +2593208*a(n-10) +10304257*a(n-12) +28327948*a(n-14) +55782736*a(n-16) +83338496*a(n-18) +93171712*a(n-20) +85534720*a(n-22) +49102848*a(n-24) +25690112*a(n-26).
EXAMPLE
Some solutions for n=4
..3..2....1..1....1..2....3..0....3..0....2..1....2..2....3..3....1..1....2..3
..3..1....0..0....2..0....3..2....0..2....3..2....0..2....3..2....3..0....3..1
..2..1....1..2....1..0....3..3....0..2....1..0....3..3....0..2....0..0....1..0
..3..3....3..3....3..0....2..2....3..3....1..2....1..0....1..3....0..2....0..1
..3..3....3..1....2..1....1..2....2..3....1..3....0..1....0..0....3..0....3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2014
STATUS
approved