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A166655 Totally multiplicative sequence with a(p) = 6p-1 for prime p. 1
1, 11, 17, 121, 29, 187, 41, 1331, 289, 319, 65, 2057, 77, 451, 493, 14641, 101, 3179, 113, 3509, 697, 715, 137, 22627, 841, 847, 4913, 4961, 173, 5423, 185, 161051, 1105, 1111, 1189, 34969, 221, 1243, 1309, 38599, 245, 7667, 257, 7865, 8381, 1507, 281 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000

FORMULA

Multiplicative with a(p^e) = (6p-1)^e. If n = Product p(k)^e(k) then a(n) = Product (6*p(k)-1)^e(k).

MATHEMATICA

a[1] = 1; a[n_] := (fi = FactorInteger[n]; Times @@ ((6*fi[[All, 1]] - 1)^fi[[All, 2]])); Table[a[n], {n, 1, 100}] (* G. C. Greubel, May 21 2016 *)

CROSSREFS

Sequence in context: A090286 A226677 A056577 * A262552 A279332 A286959

Adjacent sequences:  A166652 A166653 A166654 * A166656 A166657 A166658

KEYWORD

nonn,mult

AUTHOR

Jaroslav Krizek, Oct 18 2009

STATUS

approved

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Last modified June 24 18:38 EDT 2021. Contains 345419 sequences. (Running on oeis4.)