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A103335 Numbers whose smallest primitive root (A046145) is not prime. 3
1, 2, 41, 109, 151, 229, 251, 271, 313, 337, 362, 367, 409, 439, 542, 626, 674, 733, 761, 818, 878, 971, 991, 1021, 1031, 1069, 1289, 1297, 1303, 1429, 1471, 1489, 1681, 1759, 1783, 1789, 1811, 1871, 1873, 1879, 2062, 2137, 2342, 2411, 2441, 2551, 2594 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..46.

Eric Weisstein's World of Mathematics, Primitive Root.

MATHEMATICA

L = {}; Do[ If[!PrimeQ[ Min[ Select[ Range[n], CoprimeQ[#, n] && MultiplicativeOrder[#, n] == CarmichaelLambda[n] &]]],

L = Append[L, n]], {n, 1, 3000}]; L (* Jonathan Sondow, May 17 2017 *)

CROSSREFS

Cf. A001918, A046144, A046145, A046146, A103309, A103310, A103336, A103337, A103338.

Sequence in context: A285792 A073468 A073186 * A047936 A007533 A088565

Adjacent sequences:  A103332 A103333 A103334 * A103336 A103337 A103338

KEYWORD

nonn

AUTHOR

Harry J. Smith, Jan 31 2005

STATUS

approved

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Last modified January 23 01:30 EST 2020. Contains 331166 sequences. (Running on oeis4.)