A249635 Indices of prime Fibonacci 6-step numbers, A001592.

7, 40, 41, 96, 664, 6095, 8419, 11471, 13690, 38835, 49832, 97152

Offset: 1

Author

Robert Price, Nov 02 2014

Keywords

• nonn
• more

Comments

This sequence is similar to A105758 but uses the indexing scheme defined by A001592, whose indices start with 0.

a(13) > 3*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
• Eric Weisstein's World of Mathematics, Fibonacci n-Step Number

Crossrefs

Cf. A001592, A105758.

Programs

Mathematica

a = {0, 0, 0, 0, 0, 1}; For[n = 6, n ≤ 1000, n++, sum = Plus @@ a;
If[PrimeQ[sum], Print[n]]; a = RotateLeft[a]; a[[6]] = sum]

Formula

a(n) = A105758 (n) + 4.