login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A105766 Indices of prime Lucas 6-step numbers, A074584. 1
2, 3, 5, 8, 11, 32, 37, 46, 123, 237, 332, 408, 772, 827, 1523, 5610, 11273, 14505 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

No other n < 30000.

LINKS

Table of n, a(n) for n=1..18.

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

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

CROSSREFS

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

Sequence in context: A262841 A259973 A092362 * A056695 A287006 A020899

Adjacent sequences:  A105763 A105764 A105765 * A105767 A105768 A105769

KEYWORD

nonn

AUTHOR

T. D. Noe, Apr 22 2005

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 14 12:28 EST 2018. Contains 318097 sequences. (Running on oeis4.)