A105761 Prime Fibonacci 7-step numbers, A066178.

2, 127, 31489

Offset

1,1

Comments

The next term is the 30673-digit probable prime 59456197869789581...206057955817 that is the 102490th term of the heptanacci sequence (using the definition in Noe-Post and Weisstein). This is too large to include here.

Links

Table of n, a(n) for n=1..3.

Tony D. Noe and Jonathan Vos Post, Primes in Fibonacci n-step and Lucas n-step Sequences, J. of Integer Sequences, Vol. 8 (2005), Article 05.4.4

Eric Weisstein's World of Mathematics, Fibonacci n-Step Number

Mathematica

a={1, 0, 0, 0, 0, 0, 0}; lst={}; Do[s=Plus@@a; a=RotateLeft[a]; a[[ -1]]=s; If[PrimeQ[s], AppendTo[lst, s]], {n, 100}]; lst

Crossrefs

Sequence in context: A075596 A092832 A181001 * A157473 A004864 A106319

Adjacent sequences: A105758 A105759 A105760 * A105762 A105763 A105764

Keyword

bref,nonn

Author

T. D. Noe, Apr 22 2005, May 13 2008

Status

approved