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Search: id:A133202
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| A133202 |
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Number of divisors of the absolute value of Ramanujan tau numbers. |
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+0
1
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| 1, 8, 18, 14, 32, 48, 32, 80, 20, 120, 48, 108, 16, 112, 192, 26, 48, 96, 144, 192, 216, 144, 32, 384, 12, 20, 224, 120
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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Bruce C. Berndt and Ken Ono, Ramanujan's unpublished manuscript on the partition and tau functions with proofs and commentary, http://www.emis.de/journals/SLC/wpapers/s42berndt.pdf
S. C. Milne, New infinite families of exact sums of squares formulas, Jacobi elliptic functions, and Ramanujan's tau function, http://www.pnas.org/cgi/reprint/93/26/15004.pdf
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FORMULA
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a(n) = number of divisors of abs. value of Ramanujan tau numbers.
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CROSSREFS
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Cf. A000594.
Sequence in context: A107779 A018874 A137788 this_sequence A101241 A031258 A108060
Adjacent sequences: A133199 A133200 A133201 this_sequence A133203 A133204 A133205
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KEYWORD
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nonn
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AUTHOR
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Ctibor O. Zizka (ctibor.zizka(AT)seznam.cz), Dec 18 2007
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