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A014981
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a(n)=c(p(n))/p(n), where c = Perrin sequence A001608 (starting 0,2,3,...) and p(n) = n-th prime.
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2
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1, 1, 1, 1, 2, 3, 7, 11, 28, 120, 197, 892, 2479, 4148, 11687, 56010, 271913, 461529, 2270882, 6599404, 11263855, 56250108, 164879269, 830987861, 7231032935, 21386730355, 36802336319, 109099442316, 187943217386
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,5
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REFERENCES
| An Insufficient Condition for Primality, Problem 10268, American Mathematical Monthly, v. 103, n. 10, p. 911, Dec. 1996.
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..200
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CROSSREFS
| See A001608, the main entry for the Perrin sequence.
Sequence in context: A107858 A143926 A112840 * A096362 A005479 A120856
Adjacent sequences: A014978 A014979 A014980 * A014982 A014983 A014984
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KEYWORD
| nonn,easy,nice
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.edu), Robert G. Wilson v (rgwv(AT)rgwv.com)
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