OFFSET
1,1
COMMENTS
Row 3 of A202864.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (3/10)*n^5 + (3/2)*n^4 + (3/2)*n^3 - (1/2)*n^2 - (4/5)*n.
Conjectures from Colin Barker, Jun 02 2018: (Start)
G.f.: 2*x*(1 + 15*x + 3*x^2 - x^3) / (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=7:
6 5 2 2 5 4 1 7 4 4 4 2 2 2 1 6 3 0 2 6 2
6 2 6 3 5 4 5 1 7 1 4 6 0 0 6 2 2 6 3 4 4
1 7 7 6 2 5 6 5 3 5 3 4 3 4 0 1 5 5 5 1 6
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 25 2011
STATUS
approved