|
| |
|
|
A105768
|
|
Prime Lucas 7-step numbers, A104621.
|
|
1
| |
|
|
3, 7, 31, 127, 983, 122401, 15231991, 30341581, 60439343, 239818559, 235883775871, 935968272887, 462162688688737, 3592979567873032703, 439785318101603999198591, 432569613524779275706080077
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
REFERENCES
| Tony D. Noe and Jonathan Vos Post, Primes in Fibonacci n-step and Lucas n-step Sequences, Journal of Integer Sequences, Vol. 8 (2005), Article 05.4.4.
|
|
|
LINKS
| Eric Weisstein's World of Mathematics, Lucas n-Step Number
|
|
|
MATHEMATICA
| a={-1, -1, -1, -1, -1, -1, 7}; lst={}; Do[s=Plus@@a; a=RotateLeft[a]; a[[ -1]]=s; If[PrimeQ[s], AppendTo[lst, s]], {n, 1000}]; lst
|
|
|
CROSSREFS
| Cf. A104622 (indices of prime Lucas 7-step numbers).
Sequence in context: A051281 A145038 A138864 * A084924 A001348 A006515
Adjacent sequences: A105765 A105766 A105767 * A105769 A105770 A105771
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| T. D. Noe (noe(AT)sspectra.com), Apr 22 2005
|
| |
|
|
