login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A128154 a(n) = least k such that the remainder when 14^k is divided by k is n. 34
13, 3, 11, 5, 33, 10, 1967, 9, 23587, 18, 2733, 46, 17651, 15, 93929, 20, 303, 178, 145, 22, 12901, 58, 2721, 25, 17990951, 27, 143, 36, 85, 166, 646123, 82, 2439143677, 55, 63, 76, 319, 123, 295, 52, 51, 77, 247380287953, 45, 5779134947, 90, 87, 74, 175, 146 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

Robert G. Wilson v, Table of n, a(n) for n = 1..10000 with -1 for large entries where a(n) has not yet been found

MATHEMATICA

t = Table[0, {10000} ]; k = 1; While[ k < 3000000000, a = PowerMod[14, k, k]; If[a < 10001 && t[[a]] == 0, t[[a]] = k; Print[{a, k}]]; k++ ]; t

lk[n_]:=Module[{k=1}, While[PowerMod[14, k, k]!=n, k++]; k]; Array[lk, 20] (* Harvey P. Dale, Aug 17 2013 *)

CROSSREFS

Cf. A036236, A078457, A119678, A119679, A127816, A119715, A119714, A127817, A127818, A127819, A127820, A127821, A128155, A128156, A128157, A128158, A128159, A128160, A128149, A128150.

Sequence in context: A117540 A010221 A113172 * A213538 A264971 A107806

Adjacent sequences:  A128151 A128152 A128153 * A128155 A128156 A128157

KEYWORD

hard,nonn

AUTHOR

Alexander Adamchuk, Feb 16 2007

EXTENSIONS

More terms from Ryan Propper, Feb 28 2007

a(43) from Hagen von Eitzen, Aug 16 2009

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 December 17 00:33 EST 2018. Contains 318191 sequences. (Running on oeis4.)