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A003571 Order of 3 mod 3n+1. 3
2, 6, 4, 3, 4, 18, 5, 20, 6, 30, 16, 18, 4, 42, 11, 42, 6, 20, 28, 10, 16, 22, 12, 12, 18, 78, 8, 16, 10, 6, 23, 48, 20, 34, 52, 27, 12, 44, 29, 5, 30, 126, 12, 18, 16, 138, 35, 28, 18, 50, 30, 78, 8, 162, 41, 39, 42, 60, 88, 45, 22, 80, 36, 16, 42, 198, 100, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..68.

MAPLE

with(numtheory): f := n->order(3, 3*n+1);

MATHEMATICA

Table[MultiplicativeOrder[3, 3*n + 1], {n, 68}] (* Arkadiusz Wesolowski, Nov 27 2012 *)

CROSSREFS

Cf. A002326, A003573, A217469.

Sequence in context: A074382 A061350 A046276 * A068457 A102510 A206225

Adjacent sequences:  A003568 A003569 A003570 * A003572 A003573 A003574

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified June 20 05:23 EDT 2013. Contains 226419 sequences.