OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (15,-66,80)
FORMULA
From Vincenzo Librandi, Mar 16 2011: (Start)
a(n) = 15*a(n-1) - 66*a(n-2) + 80*a(n-3), n >= 3.
a(n) = 13*a(n-1) - 40*a(n-2) + 2^n, n >= 2. (End)
a(n) = 4*8^(n+1)/9 + 2^(n+1)/9 - 5^(n+2)/9. - R. J. Mathar, Mar 18 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved