A240106 Numbers with primitive root 19.

2, 4, 7, 11, 13, 14, 22, 23, 26, 29, 37, 41, 43, 46, 47, 53, 58, 74, 82, 83, 86, 89, 94, 106, 113, 121, 139, 163, 166, 173, 178, 191, 193, 226, 239, 242, 251, 257, 263, 269, 278, 281, 293, 311, 317, 326, 337, 346, 347, 359, 367, 382, 386, 401, 419, 433, 443

Offset

1,1

Links

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

Mathematica

pr = 19; 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), A240100 (r=17), A240103 (r=18).

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), A240097 (r=-15), A240100 (r=-17), A240102 (r=-18), A240104 (r=-19).

Sequence in context: A328418 A249594 A127575 * A206853 A229618 A087285

Adjacent sequences: A240103 A240104 A240105 * A240107 A240108 A240109

Keyword

nonn,easy

Author

Vincenzo Librandi, Apr 01 2014

Status

approved