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A014981
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a(n) = c(prime(n))/prime(n), where c = Perrin sequence A001608 (starting 0,2,3,...) and prime(n) is the n-th prime.
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4
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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
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OFFSET
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1,5
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LINKS
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PROG
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(PARI) c(n) = polsym(x^3-x-1, n)[n+1]; \\ A001608
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CROSSREFS
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See A001608, the main entry for the Perrin sequence.
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KEYWORD
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nonn,easy,nice
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AUTHOR
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STATUS
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approved
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