OFFSET
1,1
COMMENTS
Row 6 of A201811.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 11*n^5 + 65*n^3 + 64*n + 1.
Conjectures from Colin Barker, May 25 2018: (Start)
G.f.: x*(141 + 155*x + 730*x^2 + 150*x^3 + 145*x^4 - x^5) / (1 - x)^6.
a(n) = 6*a(n-1) - 15*a(n-2) + 20*a(n-3) - 15*a(n-4) + 6*a(n-5) - a(n-6) for n>6.
(End)
EXAMPLE
Some solutions for n=6:
..6....4....2...-5...-6....6....2...-2...-4...-4...-4....0....4...-4....5...-4
.-5....1....6...-1....2....5...-4...-4...-1....1...-3....5...-1....1...-3...-1
.-4...-4...-5....3....5....1...-2....0....3...-1....4...-4....3...-4...-5....4
..1...-2...-4....5...-1...-5....2....2...-6....6....1....0...-4...-1....5....1
.-1....4...-3...-4...-6...-5...-1....0....6....1...-3...-2...-6....2....2...-4
..3...-3....4....2....6...-2....3....4....2...-3....5....1....4....6...-4....4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 05 2011
STATUS
approved