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A105764
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Indices of prime Lucas 5-step numbers, A074048.
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2
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2, 3, 5, 7, 8, 9, 10, 13, 30, 35, 77, 98, 126, 160, 192, 810, 1086, 1999, 2021, 3157, 3426, 3471, 15066, 24115, 29782, 29941
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| No other n < 30000.
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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.
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LINKS
| Eric Weisstein's World of Mathematics, Lucas n-Step Number
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MATHEMATICA
| a={-1, -1, -1, -1, 5}; lst={}; Do[s=Plus@@a; a=RotateLeft[a]; a[[ -1]]=s; If[PrimeQ[s], AppendTo[lst, n]], {n, 30000}]; lst
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CROSSREFS
| Cf. A105765 (prime Lucas 5-step numbers).
Sequence in context: A111292 A047373 A039048 * A053661 A171944 A134623
Adjacent sequences: A105761 A105762 A105763 * A105765 A105766 A105767
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KEYWORD
| nonn
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AUTHOR
| T. D. Noe (noe(AT)sspectra.com), Apr 22 2005
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