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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A217852 Multiplicative order of 5 (mod 5*n - 1). 2
1, 6, 6, 9, 2, 14, 16, 4, 5, 42, 18, 29, 16, 22, 36, 39, 6, 44, 46, 30, 4, 27, 18, 48, 3, 42, 22, 69, 12, 37, 30, 52, 20, 52, 14, 89, 22, 18, 96, 33, 16, 45, 106, 72, 24, 114, 12, 119, 30, 82, 42, 36, 10, 67, 136, 6, 5, 272, 42, 44, 36, 102, 156, 70, 54, 138, 166 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Least m such that 5*n - 1 divides 5^m - 1.

LINKS

Arkadiusz Wesolowski, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Multiplicative Order

MATHEMATICA

Table[MultiplicativeOrder[5, 5*n - 1], {n, 67}]

PROG

(PARI) vector(80, n, znorder(Mod(5, 5*n-1))) \\ Michel Marcus, Feb 09 2015

(GAP) List([1..70], n->OrderMod(5, 5*n-1)); # Muniru A Asiru, Feb 25 2019

CROSSREFS

Cf. A002326, A003572, A003574, A128858.

Sequence in context: A200616 A019851 A155880 * A021603 A250721 A065480

Adjacent sequences:  A217849 A217850 A217851 * A217853 A217854 A217855

KEYWORD

nonn

AUTHOR

Arkadiusz Wesolowski, Nov 16 2012

STATUS

approved

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 May 7 20:36 EDT 2021. Contains 343652 sequences. (Running on oeis4.)