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A013766 20^(3n+1). 1
20, 160000, 1280000000, 10240000000000, 81920000000000000, 655360000000000000000, 5242880000000000000000000, 41943040000000000000000000000, 335544320000000000000000000000000, 2684354560000000000000000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (8000).

MATHEMATICA

20^(3Range[0, 10]+1) (* Harvey P. Dale, Jun 23 2011 *)

PROG

(MAGMA) [20^(3*n+1): n in [0..10]]; // Vincenzo Librandi, Jun 27 2011

(Maxima) makelist(20^(3*n+1), n, 0, 20); /* Martin Ettl, Oct 21 2012 */

(PARI) a(n)=20^(3*n+1) \\ Charles R Greathouse IV, Jul 10 2016

CROSSREFS

Sequence in context: A165344 A222745 A175853 * A078354 A203306 A211489

Adjacent sequences:  A013763 A013764 A013765 * A013767 A013768 A013769

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified May 28 19:46 EDT 2017. Contains 287241 sequences.