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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A064739 Primes p such that Fibonacci(p)-1 is divisible by p. 15
2, 11, 19, 29, 31, 41, 59, 61, 71, 79, 89, 101, 109, 131, 139, 149, 151, 179, 181, 191, 199, 211, 229, 239, 241, 251, 269, 271, 281, 311, 331, 349, 359, 379, 389, 401, 409, 419, 421, 431, 439, 449, 461, 479, 491, 499, 509, 521, 541, 569, 571, 599, 601, 619 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..1000

FORMULA

Presumably this consists of 2 together with the primes congruent to +-1 mod 5.

MATHEMATICA

lst={}; Do[p=Prime[n]; If[Mod[(Fibonacci[p]-1), p]==0, AppendTo[lst, p]], {n, 6!}]; lst (* Vladimir Joseph Stephan Orlovsky, Apr 03 2009 *)

PROG

(PARI) forprime(p=2, 700, if((fibonacci(p)-1)%p==0, print1(p, ", ")))

(PARI) { n=0; for (m=1, 10^9, p=prime(m); if ((fibonacci(p) - 1)%p==0, write("b064739.txt", n++, " ", p); if (n==1000, break)) ) } \\ Harry J. Smith, Sep 24 2009

CROSSREFS

{2} union A045468. Complement is A003631 minus {2}.

Sequence in context: A019375 A078784 A117196 * A112860 A152312 A154765

Adjacent sequences:  A064736 A064737 A064738 * A064740 A064741 A064742

KEYWORD

nonn

AUTHOR

Shane Findley and N. J. A. Sloane, Oct 17 2001

EXTENSIONS

More terms from Klaus Brockhaus, Oct 18 2001

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 23 11:33 EST 2018. Contains 299579 sequences. (Running on oeis4.)