OFFSET
1,1
COMMENTS
Row 5 of A200154.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = a(n-1) +a(n-2) +a(n-4) -3*a(n-5) -a(n-6) +a(n-8) +3*a(n-9) -a(n-10) -a(n-12) -a(n-13) +a(n-14).
Empirical g.f.: x*(2 + 13*x + 23*x^2 + 48*x^3 + 57*x^4 + 67*x^5 + 60*x^6 + 48*x^7 + 26*x^8 + 11*x^9 + x^10 - x^12 + x^13) / ((1 - x)^5*(1 + x)^3*(1 + x^2)^2*(1 + x + x^2)). - Colin Barker, May 17 2018
EXAMPLE
Some solutions for n=6:
..6....4....1....0....2....6....2....2....4....6....6....0....6....6....2....4
..4....5....1....6....0....1....2....3....6....2....5....6....6....5....3....4
..1....3....1....6....2....0....0....2....3....0....2....6....4....4....2....5
..0....1....2....4....4....2....0....1....0....0....1....3....3....4....2....5
..4....2....5....4....2....6....6....2....2....2....6....0....6....6....6....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 13 2011
STATUS
approved