OFFSET
1,1
COMMENTS
Column 3 of A210125
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 49*a(n-1) -776*a(n-2) +3750*a(n-3) +14056*a(n-4) -142120*a(n-5) -40107*a(n-6) +1691155*a(n-7) -89248*a(n-8) -8106546*a(n-9) +124804*a(n-10) +16077560*a(n-11) +19696*a(n-12) -11388288*a(n-13) +186112*a(n-14) +546816*a(n-15)
EXAMPLE
Some solutions for n=4
..0..0..1..0....0..1..0..0....0..1..1..0....0..1..1..0....0..0..1..2
..2..0..1..0....0..1..0..1....0..0..0..0....0..0..0..1....0..3..2..1
..0..2..3..2....1..0..1..0....0..2..2..2....0..1..0..0....1..2..2..2
..1..3..2..3....2..3..2..3....3..1..1..1....0..1..1..0....1..1..1..1
..0..2..3..2....2..2..2..2....1..1..2..1....0..1..0..0....1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 17 2012
STATUS
approved