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A166657
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Totally multiplicative sequence with a(p) = 8p-1 for prime p.
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1
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1, 15, 23, 225, 39, 345, 55, 3375, 529, 585, 87, 5175, 103, 825, 897, 50625, 135, 7935, 151, 8775, 1265, 1305, 183, 77625, 1521, 1545, 12167, 12375, 231, 13455, 247, 759375, 2001, 2025, 2145, 119025, 295, 2265, 2369, 131625, 327, 18975, 343, 19575
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OFFSET
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1,2
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LINKS
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FORMULA
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Multiplicative with a(p^e) = (8p-1)^e. If n = Product p(k)^e(k) then a(n) = Product (8*p(k)-1)^e(k).
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MATHEMATICA
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a[1] = 1; a[n_] := (fi = FactorInteger[n]; Times @@ ((8*fi[[All, 1]] - 1)^fi[[All, 2]])); Table[a[n], {n, 1, 100}] (* G. C. Greubel, May 21 2016 *)
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CROSSREFS
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KEYWORD
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nonn,mult
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AUTHOR
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STATUS
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approved
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