OFFSET
0,1
COMMENTS
Primes of this sequence in A196656.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (3,-2).
FORMULA
a(n) = 33*2^(n+1) + 7.
From Elmo R. Oliveira, Dec 01 2025: (Start)
G.f.: (73-80*x)/((2*x-1)*(x-1)).
E.g.f.: exp(x)*(7 + 66*exp(x)).
a(n) = 3*a(n-1) - 2*a(n-2). (End)
MATHEMATICA
LinearRecurrence[{3, -2}, {73, 139}, 50] (* Vincenzo Librandi, Nov 25 2011 *)
PROG
(Magma) [33*2^(n+1) + 7: n in [0..100]];
(PARI) a(n)=66<<n+7 \\ Charles R Greathouse IV, Oct 07 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Brad Clardy, Oct 04 2011
STATUS
approved
