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A166670 Totally multiplicative sequence with a(p) = 5p-2 for prime p. 1
1, 8, 13, 64, 23, 104, 33, 512, 169, 184, 53, 832, 63, 264, 299, 4096, 83, 1352, 93, 1472, 429, 424, 113, 6656, 529, 504, 2197, 2112, 143, 2392, 153, 32768, 689, 664, 759, 10816, 183, 744, 819, 11776, 203, 3432, 213, 3392, 3887, 904, 233, 53248, 1089, 4232 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
FORMULA
Multiplicative with a(p^e) = (5p-2)^e. If n = Product p(k)^e(k) then a(n) = Product (5*p(k)-2)^e(k).
MATHEMATICA
a[1] = 1; a[n_] := (fi = FactorInteger[n]; Times @@ ((5*fi[[All, 1]] - 2)^fi[[All, 2]])); Table[a[n], {n, 1, 100}] (* G. C. Greubel, May 22 2016 *)
CROSSREFS
Sequence in context: A081966 A316527 A304546 * A107764 A306131 A177183
KEYWORD
nonn,mult
AUTHOR
Jaroslav Krizek, Oct 18 2009
STATUS
approved

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Last modified March 29 04:59 EDT 2024. Contains 371264 sequences. (Running on oeis4.)