OFFSET
1,1
COMMENTS
Column 2 of A251819
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +2*a(n-2) +9*a(n-3) +2*a(n-4) -5*a(n-5) -23*a(n-6) -14*a(n-7) +2*a(n-8) +25*a(n-9) +20*a(n-10) +4*a(n-11) -12*a(n-12) -11*a(n-13) -4*a(n-14) +2*a(n-15) +2*a(n-16) +a(n-17) for n>25
EXAMPLE
Some solutions for n=4
..0..1..2..0....0..2..0..0....2..1..2..2....1..1..0..1....0..1..1..1
..2..0..1..2....1..0..1..1....1..1..1..0....0..1..1..1....1..1..1..1
..0..1..2..0....2..1..2..2....0..0..2..0....1..1..1..1....1..1..1..1
..0..1..2..0....0..2..0..0....2..1..2..2....1..0..1..1....1..1..1..0
..2..0..1..2....1..0..1..1....0..1..1..0....1..1..1..0....1..1..1..1
..0..1..2..0....2..1..2..2....0..0..2..1....1..1..1..1....1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2014
STATUS
approved