OFFSET
0,2
LINKS
Paolo Xausa, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (13,-47,35).
FORMULA
G.f.: 1/(1-7*x)-1/(1-5*x)+1/(1-x).
E.g.f.: e^(7*x)-e^(5*x)+e^x.
a(n) = 12*a(n-1)-35*a(n-2)+24 with a(0)=1, a(1)=3. - Vincenzo Librandi, Jul 21 2010
MATHEMATICA
Table[7^n - 5^n + 1, {n, 0, 25}] (* Paolo Xausa, Jul 26 2024 *)
PROG
(PARI) a(n)=7^n-5^n+1 \\ Charles R Greathouse IV, Sep 24 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Mohammad K. Azarian, Jan 30 2009
STATUS
approved