A227885 Primes in the union of all n-step Lucas sequences.

2, 3, 7, 11, 29, 31, 47, 71, 113, 127, 131, 191, 199, 223, 239, 241, 367, 439, 443, 521, 863, 983, 1013, 1499, 1871, 2003, 2207, 3571, 6553, 8087, 8191, 9349, 16369, 32647, 32707, 36319, 63487, 65407, 65519, 122401, 126719, 131071, 196331, 260111, 524287

Offset: 1

Author

Robert Price, Oct 25 2013

Keywords

• nonn

Links

• T. D. Noe, Table of n, a(n) for n = 1..1000 (first 383 terms from Robert Price)
• 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

Crossrefs

Cf. A127208, A000032, A001644, A073817, A074048, A074584, A104621, A105754, A105755.

Programs

Mathematica

plst={2}; plimit=10^39; For[n=2, n<=3+Log[2,plimit], n++, llst={}; For[i=1, i
				

Formula

2 and the primes in A127208.