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A094919 (4^n-1)/3 mod n. 1
0, 1, 0, 1, 1, 3, 1, 5, 0, 5, 1, 9, 1, 5, 6, 5, 1, 9, 1, 5, 0, 5, 1, 21, 16, 5, 0, 1, 1, 15, 1, 21, 21, 5, 26, 9, 1, 5, 21, 5, 1, 21, 1, 41, 36, 5, 1, 21, 22, 25, 21, 33, 1, 27, 11, 5, 21, 5, 1, 45, 1, 5, 0, 21, 16, 45, 1, 17, 21, 15, 1, 45, 1, 5, 66, 9, 5, 39, 1, 5, 0, 5, 1, 21, 1, 5, 21, 21, 1, 45 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..90.

MATHEMATICA

Table[Mod[(4^n-1)/3, n], {n, 100}] (* Harvey P. Dale, Apr 11 2013 *)

CROSSREFS

Sequence in context: A237588 A235796 A120444 * A328373 A316631 A197152

Adjacent sequences:  A094916 A094917 A094918 * A094920 A094921 A094922

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 18 2004

STATUS

approved

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Last modified September 20 06:51 EDT 2020. Contains 337264 sequences. (Running on oeis4.)