OFFSET
0,2
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..1000
FORMULA
Conjectures from Colin Barker, Jan 29 2018: (Start)
G.f.: (1 + x)^4*(1 + x^2) / ((1 - x)^3*(1 + x + x^2)^2).
a(n) = a(n-1) + 2*a(n-3) - 2*a(n-4) - a(n-6) + a(n-7) for n>6.
(End)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 27 2018
EXTENSIONS
More terms from Rémy Sigrist, Jan 28 2018
STATUS
approved