OFFSET
0,1
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (17,-72).
FORMULA
From Mohammad K. Azarian, Jan 11 2009: (Start)
G.f.: 1/(1-8*x) + 1/(1-9*x).
E.g.f.: exp(8*x) + exp(9*x). (End)
a(n) = 17*a(n-1) - 72*a(n-2) with a(0)=2, a(1)=17. - Vincenzo Librandi, Jul 21 2010
MAPLE
seq(8^n+9^n, n=0..30); # Robert Israel, Mar 11 2023
MATHEMATICA
Table[8^n + 9^n, {n, 0, 20}]
PROG
(PARI) a(n)=8^n+9^n \\ Charles R Greathouse IV, Apr 08 2016
(Magma) [8^n+9^n: n in [0..30]]; // G. C. Greubel, Mar 11 2023
(SageMath) [8^n+9^n for n in range(31)] # G. C. Greubel, Mar 11 2023
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Robert G. Wilson v, Aug 26 2002
STATUS
approved