OFFSET
0,2
COMMENTS
Partial sums are 1, 13, 109, 877, 7021, 56173, ...
LINKS
Colin Barker, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (8).
FORMULA
G.f.: (1+4*x) / (1-8*x).
a(n) = 8*a(n-1) for n>1.
a(n) = 12*8^(n-1) for n>0.
a(n) = A094085(n), n>1. - R. J. Mathar, Mar 21 2016
MATHEMATICA
CoefficientList[Series[(1 + 4 x)/(1 - 8 x), {x, 0, 20}], x] (* Michael De Vlieger, Mar 19 2016 *)
Join[{1}, NestList[8#&, 12, 30]] (* Harvey P. Dale, Oct 05 2022 *)
PROG
(PARI) Vec((1+4*x)/(1-8*x) + O(x^30))
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Colin Barker, Mar 19 2016
STATUS
approved