A155916 Prime factors of odd Fibonacci numbers.

3, 5, 7, 11, 13, 29, 37, 41, 43, 47, 59, 67, 71, 73, 89, 97, 101, 103, 113, 127, 131, 139, 149, 151, 157, 163, 179, 191, 193, 199, 223, 233, 239, 251, 263, 269, 277, 281, 283, 307, 311, 313, 331, 337, 347, 353, 359, 367, 373, 389, 397, 401, 419, 431, 433, 449

Offset

1,1

Comments

Primes not in A133247.

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

filter:= proc(p) local a, b, i;
if not isprime(p) then return false fi;
a:= 0: b:= 1;
for i from 2 do
  a, b:= b, (a+b) mod p;
  if b = 0 then
    if i mod 3 <> 0 then return true
    elif a = 1 then return false
    fi
  fi
od:
end proc:
select(filter, [seq(i, i=3..1000, 2)]); # Robert Israel, Nov 20 2016

Crossrefs

Cf. A014437, A133247.

Sequence in context: A259730 A254673 A343976 * A038979 A179739 A093988

Adjacent sequences: A155913 A155914 A155915 * A155917 A155918 A155919

Keyword

nonn

Author

Tanya Khovanova, Jan 30 2009

Status

approved