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A111929
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Numerator of x(n) = Sum((odd part of k)/(k^2): 1<=k<=n).
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5
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1, 5, 19, 79, 443, 463, 3481, 14029, 44327, 9067, 103769, 104693, 1405361, 1425953, 7321957, 29332873, 510190361, 515635801, 9993116059, 10039674571, 10217040331, 10301692171, 240663600893, 241109786633, 1222682465581
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Denominator of x(n) = A111930(n);
x(n) = a(n)/A111930(n) does not converge.
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REFERENCES
| G. Polya and G. Szego, Problems and Theorems in Analysis I (Springer 1924, reprinted 1972), Part Eight, Chap. 1, Sect. 6, Problem 50.
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LINKS
| Eric Weisstein's World of Mathematics, Odd Part
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CROSSREFS
| Cf. A000265, A111918, A111920, A111922.
Sequence in context: A163609 A149779 A125657 * A146030 A098041 A149780
Adjacent sequences: A111926 A111927 A111928 * A111930 A111931 A111932
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KEYWORD
| nonn,frac
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AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 21 2005
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