OFFSET
0,2
LINKS
FORMULA
Conjectures from Chai Wah Wu, Mar 05 2021: (Start)
a(n) = 2*a(n-1) - a(n-2) for n > 9.
G.f.: (688*x^9 - 22*x^8 + 41*x^6 - 38*x^5 + 38*x^4 - 13*x^3 + 7*x^2 + 8*x + 1)/(x - 1)^2. (End)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved