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A013766
20^(3n+1).
1
20, 160000, 1280000000, 10240000000000, 81920000000000000, 655360000000000000000, 5242880000000000000000000, 41943040000000000000000000000, 335544320000000000000000000000000, 2684354560000000000000000000000000000
OFFSET
0,1
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: A222745 A175853 A340167 * A078354 A203306 A211489
KEYWORD
nonn,easy
STATUS
approved