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A166591 Totally multiplicative sequence with a(p) = p+3 for prime p. 16
1, 5, 6, 25, 8, 30, 10, 125, 36, 40, 14, 150, 16, 50, 48, 625, 20, 180, 22, 200, 60, 70, 26, 750, 64, 80, 216, 250, 32, 240, 34, 3125, 84, 100, 80, 900, 40, 110, 96, 1000, 44, 300, 46, 350, 288, 130, 50, 3750, 100, 320, 120, 400, 56, 1080, 112, 1250, 132, 160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..58.

FORMULA

Multiplicative with a(p^e) = (p+3)^e.

If n = Product p(k)^e(k) then a(n) = Product (p(k)+3)^e(k).

PROG

(PARI) a(n) = my(f=factor(n)); for (i=1, #f~, f[i, 1] += 3); factorback(f); \\ Michel Marcus, Jun 09 2014

CROSSREFS

Sequence in context: A042027 A042283 A047186 * A160529 A039572 A033042

Adjacent sequences:  A166588 A166589 A166590 * A166592 A166593 A166594

KEYWORD

nonn,mult

AUTHOR

Jaroslav Krizek, Oct 17 2009

EXTENSIONS

More terms from Michel Marcus, Jun 09 2014

STATUS

approved

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Last modified February 19 16:28 EST 2018. Contains 299356 sequences. (Running on oeis4.)