login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A013825
a(n) = 2^(5*n + 4).
2
16, 512, 16384, 524288, 16777216, 536870912, 17179869184, 549755813888, 17592186044416, 562949953421312, 18014398509481984, 576460752303423488, 18446744073709551616, 590295810358705651712, 18889465931478580854784
OFFSET
0,1
FORMULA
From Philippe Deléham, Nov 24 2008: (Start)
a(n) = 32*a(n-1), n > 0; a(0)=16.
G.f.: 16/(1-32*x).
a(n) = 16*A009976(n). (End)
MATHEMATICA
2^(5*Range[0, 20] + 4) (* or *) NestList[32#&, 16, 20] (* Harvey P. Dale, Sep 27 2015 *)
PROG
(Magma) [2^(5*n+4): n in [0..15]]; // Vincenzo Librandi, Jul 07 2011
CROSSREFS
Cf. A000079 (2^n), A016897 (5*n+4).
Sequence in context: A303424 A317514 A300179 * A099772 A041483 A041480
KEYWORD
nonn,easy
STATUS
approved