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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A139686 Odd multiplicative orders of 2 modulo primes. 1
3, 11, 5, 23, 35, 9, 39, 11, 51, 7, 15, 83, 95, 99, 37, 29, 119, 131, 135, 155, 21, 179, 183, 191, 43, 73, 231, 239, 243, 251, 299, 25, 303, 45, 323, 359, 121, 371, 375, 411, 419, 431, 55, 443, 91, 153, 117, 483, 491, 495, 515, 519, 531, 543, 29, 575, 611, 615, 639 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A014664, consisting of odd elements.

FORMULA

a(n) = multiplicative order of 2 modulo A014663(n)

PROG

(PARI) forprime(p=3, 10^5, z=znorder(Mod(2, p)); if(z%2, print1(z, ", ")))

CROSSREFS

Cf. A014664, A014663.

Sequence in context: A084462 A156320 A134969 * A130537 A114234 A120299

Adjacent sequences:  A139683 A139684 A139685 * A139687 A139688 A139689

KEYWORD

nonn

AUTHOR

Max Alekseyev (maxale(AT)gmail.com), Apr 29 2008

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 21:13 EST 2012. Contains 206085 sequences.