OFFSET
1,1
COMMENTS
Column 2 of A236035.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 8*a(n-2) +82*a(n-3) +490*a(n-4) +1217*a(n-5) +2163*a(n-6) +914*a(n-7) -9130*a(n-8) -22593*a(n-9) -22916*a(n-10) +10688*a(n-11) +64870*a(n-12) +38436*a(n-13) -42508*a(n-14) -30622*a(n-15) +4270*a(n-16) +9712*a(n-17) +528*a(n-18) -1536*a(n-19).
EXAMPLE
Some solutions for n=4
..1..2..1....2..2..1....1..2..2....0..2..0....1..0..0....1..2..0....0..2..0
..1..0..0....1..2..0....2..1..2....1..1..2....1..1..1....0..2..0....0..0..1
..1..0..2....2..0..2....1..0..0....2..2..2....0..0..2....0..0..1....1..1..2
..1..2..0....2..2..1....2..0..0....2..0..0....0..1..0....1..2..1....2..0..2
..0..0..0....1..1..1....2..2..2....2..0..1....0..1..2....0..1..2....1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2014
STATUS
approved