OFFSET
0,2
COMMENTS
Original definition: a(n) = k where R(k+2) = 2.
LINKS
FORMULA
R(a(n)) = A086580(n).
From Chai Wah Wu, Jul 08 2016: (Start)
a(n) = 11*a(n-1) - 10*a(n-2) for n > 1.
G.f.: 18*x/((1 - x)*(1 - 10*x)). (End)
E.g.f.: 2*exp(x)*(exp(9*x) - 1). - Elmo R. Oliveira, Sep 12 2024
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Ray Chandler, Jul 22 2003
EXTENSIONS
Edited by Jinyuan Wang, Aug 04 2021
STATUS
approved