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 (12,-36).
FORMULA
G.f.: -3*(5*x-2)*x/(6*x-1)^2.
a(n) = 6^(n-1)*(7*n+5)/2 for n>0, a(0) = 0.
MAPLE
a:= n-> `if`(n=0, 0, 6^(n-1)*(7*n+5)/2):
seq(a(n), n=0..30);
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Sep 18 2013
STATUS
approved