The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.



(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A240093 Numbers with primitive root -13. 14


%S 2,3,4,5,6,9,10,18,23,25,27,37,41,43,46,50,54,73,74,79,81,82,86,89,97,

%T 107,109,125,127,131,137,139,146,149,158,162,178,179,191,194,197,199,

%U 214,218,241,243,250,251,254,262,263,274,278,281,283,293,298,317

%N Numbers with primitive root -13.

%H Vincenzo Librandi, <a href="/A240093/b240093.txt">Table of n, a(n) for n = 1..1000</a>

%t pr = -13; Select[Range[2, 600], MultiplicativeOrder[pr, #] == EulerPhi[#] &]

%Y 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).

%Y 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).

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Apr 01 2014

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 9 14:56 EDT 2020. Contains 335543 sequences. (Running on oeis4.)