OFFSET
1,1
COMMENTS
Column 3 of A223449
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 70*a(n-2) -1024*a(n-4) +2832*a(n-6) -1792*a(n-8) +128*a(n-10)
EXAMPLE
Some solutions for n=3
.10..2.10....2.10..2....2..0..2....0..1..0....5..3..5...10.14.10....5..3..6
..2..0..2...10.13.10....9..2..9....2..0..1....3..5..3....2.10.13....3..5..3
..0..2.10...14.10..2....2..0..2...10..2..0....6..3..6...10..2.10....5..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 20 2013
STATUS
approved