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A139730 a(n) = 9^n mod 5^n. 1
0, 4, 6, 104, 311, 2799, 191, 17344, 77971, 701739, 456276, 33403359, 202973981, 361922079, 815892461, 19550063399, 145432992466, 88193807194, 1556683717871, 10195456195214, 34538646772551, 120112957671709, 2034690935451631, 1622917881955304, 50369047802832111 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

MATHEMATICA

Table[PowerMod[9, n, 5^n], {n, 0, 30}] (* Harvey P. Dale, Jul 17 2021 *)

PROG

(Magma) [9^n mod 5^n: n in [0..35]]; // Vincenzo Librandi, Jun 03 2011

CROSSREFS

Sequence in context: A052684 A213128 A105037 * A013023 A012909 A219507

Adjacent sequences: A139727 A139728 A139729 * A139731 A139732 A139733

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 20 2008

STATUS

approved

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Last modified December 3 18:25 EST 2022. Contains 358539 sequences. (Running on oeis4.)