OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (16,-64).
FORMULA
G.f.: -4*(7*x-2)*x/(8*x-1)^2.
a(n) = 2^(3*n-4)*(9*n+7) for n>0, a(0) = 0.
From Elmo R. Oliveira, Nov 20 2025: (Start)
E.g.f.: (exp(8*x)*(72*x + 7) - 7)/16.
a(n) = 16*a(n-1) - 64*a(n-2) for n > 2. (End)
MAPLE
a:= n-> `if`(n=0, 0, 2^(3*n-4)*(9*n+7)):
seq(a(n), n=0..30);
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Sep 18 2013
STATUS
approved