A256498 Indices of primes in the 9th-order Fibonacci number sequence, A127193.

11, 15, 25, 31, 36, 37, 42, 45, 48, 75, 149, 156, 160, 182, 268, 444, 581, 1025, 1125, 2504, 6900, 10924, 11807, 25262, 26774, 28739, 29367, 34902, 43345, 53878, 74473, 107070, 170300, 178994

Offset: 1

Author

Robert Price, Mar 31 2015

Keywords

• nonn
• more

Comments

a(35) > 2*10^5.

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 Fibonacci Numbers and Variants
• OEIS Wiki, Index to OEIS Section Fi

Crossrefs

Cf. A127193, A256499.

Programs

Mathematica

a={1,1,1,1,1,1,1,1,1}; step=9; lst={}; For[n=step+1,n<=1000,n++, sum=Plus@@a; If[PrimeQ[sum], AppendTo[lst,n]]; a=RotateLeft[a]; a[[step]]=sum]; lst