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Search: id:A105768
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| 3, 7, 31, 127, 983, 122401, 15231991, 30341581, 60439343, 239818559, 235883775871, 935968272887, 462162688688737, 3592979567873032703, 439785318101603999198591, 432569613524779275706080077
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OFFSET
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1,1
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REFERENCES
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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
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Eric Weisstein's World of Mathematics, Lucas n-Step Number
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MATHEMATICA
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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
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CROSSREFS
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Cf. A104622 (indices of prime Lucas 7-step numbers).
Sequence in context: A051281 A145038 A138864 this_sequence A084924 A001348 A006515
Adjacent sequences: A105765 A105766 A105767 this_sequence A105769 A105770 A105771
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KEYWORD
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nonn
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AUTHOR
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T. D. Noe (noe(AT)sspectra.com), Apr 22 2005
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