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A166672
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Totally multiplicative sequence with a(p) = 9p-2 for prime p.
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1
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1, 16, 25, 256, 43, 400, 61, 4096, 625, 688, 97, 6400, 115, 976, 1075, 65536, 151, 10000, 169, 11008, 1525, 1552, 205, 102400, 1849, 1840, 15625, 15616, 259, 17200, 277, 1048576, 2425, 2416, 2623, 160000, 331, 2704, 2875, 176128, 367, 24400, 385
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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) = (9p-2)^e. If n = Product p(k)^e(k) then a(n) = Product (9*p(k)-2)^e(k).
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MATHEMATICA
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a[1] = 1; a[n_] := (fi = FactorInteger[n]; Times @@ ((9*fi[[All, 1]] - 2)^fi[[All, 2]])); Table[a[n], {n, 1, 100}] (* G. C. Greubel, May 22 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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