OFFSET
1,1
COMMENTS
Column 6 of A228461
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..95
FORMULA
Empirical: a(n) = 7*a(n-1) -21*a(n-2) +35*a(n-3) -14*a(n-4) -14*a(n-5) +98*a(n-6) -6*a(n-7) +63*a(n-8) +151*a(n-9) +59*a(n-10) +107*a(n-11) +124*a(n-12) +60*a(n-13) +56*a(n-14) +44*a(n-15) +17*a(n-16) +9*a(n-17) +5*a(n-18) +a(n-19)
EXAMPLE
Some solutions for n=4
..2....6....4....5....4....4....0....2....0....1....6....6....3....6....1....0
..5....3....2....0....0....2....0....3....0....1....0....2....0....3....1....2
..5....4....2....0....1....1....1....6....0....0....2....1....1....0....2....3
..6....4....2....6....3....6....4....6....3....6....3....0....6....3....5....4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 22 2013
STATUS
approved