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!)
A093372 Composite k such that Fibonacci(k) == Legendre(k,5) == 1 (mod k). 4
4181, 5474, 6479, 6721, 13201, 15251, 27071, 34561, 44099, 47519, 51841, 54839, 64079, 64681, 65471, 67861, 68251, 72831, 78089, 90061, 96049, 97921, 109871, 118441, 139359, 146611, 157079, 163081, 168299, 186961, 196559, 197209, 219781 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..300

MATHEMATICA

Select[ Range[ 2, 100000 ], ! PrimeQ[ # ] && Mod[ Fibonacci[ # ] - JacobiSymbol[ #, 5 ], # ] == 0 && JacobiSymbol[ #, 5 ] == 1 & ]

CROSSREFS

Cf. A049062, A090820, A094063.

Sequence in context: A179249 A045734 A049062 * A212424 A319168 A091982

Adjacent sequences:  A093369 A093370 A093371 * A093373 A093374 A093375

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 29 2004

EXTENSIONS

More terms from Eric Rowland, Apr 29 2004

More terms from Ryan Propper, Jul 21 2006

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 August 13 06:22 EDT 2020. Contains 336442 sequences. (Running on oeis4.)