A105766 Indices of prime Lucas 6-step numbers, A074584.

2, 3, 5, 8, 11, 32, 37, 46, 123, 237, 332, 408, 772, 827, 1523, 5610, 11273, 14505

Offset: 1

Author

T. D. Noe, Apr 22 2005

Keywords

• nonn

Comments

No other n < 30000.

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, Lucas n-Step Number

Crossrefs

Cf. A105767 (prime Lucas 6-step numbers).

Programs

Mathematica

a={-1, -1, -1, -1, -1, 6}; lst={}; Do[s=Plus@@a; a=RotateLeft[a]; a[[ -1]]=s; If[PrimeQ[s], AppendTo[lst, n]], {n, 30000}]; lst