

A105756


Indices of prime Fibonacci 5step numbers, A001591.


4



3, 7, 8, 25, 146, 169, 182, 751, 812, 1507, 1591, 3157, 3752, 10651, 12740, 71804, 155953
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OFFSET

1,1


COMMENTS

No other n < 44000.
The Noe and Post reference below utilizes a scheme for its indices which differs by 3 from the indices in A001591.  Robert Price, Oct 13 2014
The sequence is similar to A248757 which uses the indexing scheme starting at 0 as defined by A001591.  Robert Price, Oct 13 2014
a(18) > 2*10^5.  Robert Price, Oct 13 2014


LINKS

Table of n, a(n) for n=1..17.
Tony D. Noe and Jonathan Vos Post, Primes in Fibonacci nstep and Lucas nstep Sequences, J. of Integer Sequences, Vol. 8 (2005), Article 05.4.4
Eric Weisstein's World of Mathematics, Fibonacci nStep Number


MATHEMATICA

a = {1, 0, 0, 0, 0}; lst = {}; Do[s = Plus @@ a; a = RotateLeft[a];
a[[1]] = s; If[PrimeQ[s], AppendTo[lst, n]], {n, 44000}]; lst


CROSSREFS

Cf. A105757 (prime Fibonacci 5step numbers).
Sequence in context: A102007 A152486 A301523 * A152057 A177689 A191611
Adjacent sequences: A105753 A105754 A105755 * A105757 A105758 A105759


KEYWORD

nonn


AUTHOR

T. D. Noe, Apr 22 2005


EXTENSIONS

Restored original sequence after reconsideration and added a(16)a(17) by Robert Price, Oct 13 2014


STATUS

approved



