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Search: id:A064988
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| A064988 |
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Multiplicative with a(p^e) = ithprime(p)^e. |
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+0
1
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| 1, 3, 5, 9, 11, 15, 17, 27, 25, 33, 31, 45, 41, 51, 55, 81, 59, 75, 67, 99, 85, 93, 83, 135, 121, 123, 125, 153, 109, 165, 127, 243, 155, 177, 187, 225, 157, 201, 205, 297, 179, 255, 191, 279, 275, 249, 211, 405, 289, 363, 295, 369, 241, 375, 341, 459, 335, 327
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,1000
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EXAMPLE
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a(12)=a(2^2*3)=ithprime(2)^2*ithprime(3)=3^2*5=45.
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PROGRAM
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(PARI) { for (n=1, 1000, f=factor(n)~; a=1; for (i=1, length(f), a*=prime(f[1, i])^f[2, i]); write("b064988.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 02 2009]
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CROSSREFS
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Sequence in context: A071156 A076610 A069205 this_sequence A166699 A052092 A075991
Adjacent sequences: A064985 A064986 A064987 this_sequence A064989 A064990 A064991
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KEYWORD
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mult,nonn
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AUTHOR
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Vladeta Jovovic (vladeta(AT)eunet.rs), Oct 30 2001
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