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Search: id:A003970
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| A003970 |
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Moebius transform of A003960 (with alternating zeros omitted). |
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+0
2
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| 1, 1, 2, 3, 2, 5, 6, 2, 8, 9, 3, 11, 6, 4, 14, 15, 5, 6, 18, 6, 20, 21, 4, 23, 12, 8, 26, 10, 9, 29, 30, 6, 12, 33, 11, 35, 36, 6, 15, 39, 8, 41, 16, 14, 44, 18, 15, 18, 48, 10, 50, 51, 6, 53, 54, 18, 56, 22, 12, 24, 30, 20, 18, 63, 21, 65, 27, 8, 68, 69, 23, 30, 28, 12, 74, 75
(list; graph; listen)
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OFFSET
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1,3
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LINKS
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N. J. A. Sloane, Transforms
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FORMULA
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Multiplicative with a(p^e) = [(p-1)/2][(p+1)/2]^(e-1). - David W. Wilson, Sep 01, 2001
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EXAMPLE
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The Moebius transform begins 1,0,1,0,2,0,3,0,2,0,5,0,6,0,2,0,8,0,9,0,3,0,11,0,...
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CROSSREFS
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Cf. A003960.
Sequence in context: A021047 A113649 A066119 this_sequence A094443 A135873 A070673
Adjacent sequences: A003967 A003968 A003969 this_sequence A003971 A003972 A003973
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KEYWORD
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nonn,easy,mult
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AUTHOR
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Marc LeBrun (mlb(AT)well.com)
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EXTENSIONS
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More terms from Reiner Martin (reinermartin(AT)hotmail.com), Aug 15 2001
Further terms from David W. Wilson (davidwwilson(AT)comcast.net), Aug 29 2001
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