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A166630 Totally multiplicative sequence with a(p) = 9p for prime p. +0
1
1, 18, 27, 324, 45, 486, 63, 5832, 729, 810, 99, 8748, 117, 1134, 1215, 104976, 153, 13122, 171, 14580, 1701, 1782, 207, 157464, 2025, 2106, 19683, 20412, 261, 21870, 279, 1889568, 2673, 2754, 2835, 236196, 333, 3078, 3159, 262440, 369, 30618, 387 (list; graph; listen)
OFFSET

1,2

FORMULA

Multiplicative with a(p^e) = (9p)^e. If n = Product p(k)^e(k) then a(n) = Product (9*p(k))^e(k). a(n) = n * A165830(n) = n * 9^bigomega(n) = n * 9^A001222(n).

CROSSREFS

Sequence in context: A065751 A038632 A138336 this_sequence A154920 A094224 A128858

Adjacent sequences: A166627 A166628 A166629 this_sequence A166631 A166632 A166633

KEYWORD

nonn

AUTHOR

Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Oct 18 2009

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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