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

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

Offset

1,1

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

Table of n, a(n) for n=1..12.

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

Formula

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

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]

Crossrefs

Cf. A001592, A105758.

Sequence in context: A135059 A203200 A165700 * A164135 A119056 A164083

Adjacent sequences: A249632 A249633 A249634 * A249636 A249637 A249638

Keyword

nonn,more

Author

Robert Price, Nov 02 2014

Status

approved