A257967 Primes in the 11th-order Fibonacci numbers A127624.

11, 41, 641, 10462721, 20920321, 10917370260001, 364090824435675874561, 3037065045777476472194281921, 97067184407836614348142428161, 3237159714751144204638073829896089601, 26434543100644872259207947255028288307201, 3600373169282616313621210190325730096037120382894091

Offset: 1

Author

Robert Price, May 14 2015

Keywords

• nonn

Comments

a(13) is too large to display here. It has 61 digits and is the 210th term in A127624.

Links

• 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.
• OEIS Wiki, Index of Prime Fibonacci Numbers and Variants

Crossrefs

Cf. A127624, A257966.

Programs

Mathematica

a={1,1,1,1,1,1,1,1,1,1,1}; step=11; offset=1; lst={}; For[n=step+offset,n<=1000,n++, sum=Plus@@a; If[PrimeQ[sum], AppendTo[lst,sum]]; a=RotateLeft[a]; a[[step]]=sum]; lst