

A240097


Numbers with primitive root 15.


10



2, 11, 13, 22, 26, 29, 37, 41, 43, 58, 59, 71, 73, 74, 82, 86, 89, 97, 101, 103, 118, 121, 127, 131, 142, 146, 149, 157, 163, 169, 178, 179, 191, 193, 194, 202, 206, 239, 242, 251, 254, 262, 269, 281, 298, 307, 313, 314, 326, 337, 338, 358, 359, 373, 382
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OFFSET

1,1


LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000


MATHEMATICA

pr = 15; Select[Range[2, 500], MultiplicativeOrder[pr, #] == EulerPhi[#] &]


CROSSREFS

Cf. numbers with positive primitive root r: A167791 (r=2), A167792 (r=3), A167793 (r=5), A167794 (r=6), A167795 (r=7), A167796 (r=8), A167797 (r=10), A240028 (r=11), A240030 (r=12), A240032 (r=13), A240094 (r=14), A240096 (r=15).
Cf. numbers with negative primitive root r: A167798 (r=2), A167799 (r=3), A167800 (r=4), A167801 (r=5), A167802 (r=6), A167803 (r=7), A167804 (r=8), A167805 (r=9), A167806 (r=10), A240029 (r=11), A240031 (r=12), A240093 (r=13), A240095 (r=14).
Sequence in context: A166561 A179462 A207192 * A018375 A274408 A045384
Adjacent sequences: A240094 A240095 A240096 * A240098 A240099 A240100


KEYWORD

nonn,easy


AUTHOR

Vincenzo Librandi, Apr 01 2014


STATUS

approved



