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Search: id:A007433
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| A007433 |
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Inverse Moebius transform applied twice to squares.
(Formerly M4089)
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+0
2
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| 1, 6, 11, 27, 27, 66, 51, 112, 102, 162, 123, 297, 171, 306, 297, 453, 291, 612, 363, 729, 561, 738, 531, 1232, 678, 1026, 922, 1377, 843, 1782, 963, 1818, 1353, 1746, 1377, 2754, 1371, 55606, 1881, 3024, 1683
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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N. J. A. Sloane, Transforms
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FORMULA
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a(n) = Sum_{d|n} d^2*tau(n/d). - Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 31 2002
Equals A134577 * [1, 2, 3,...]. - Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 02 2007
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CROSSREFS
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Cf. A134577.
Sequence in context: A061203 A140359 A136979 this_sequence A061725 A105708 A165819
Adjacent sequences: A007430 A007431 A007432 this_sequence A007434 A007435 A007436
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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