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A086729
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Decimal expansion of sum(1/(6*m+3)^2,m=0..infinity).
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0
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1, 3, 7, 0, 7, 7, 8, 3, 8, 9, 0, 4, 0, 1, 8, 8, 6, 9, 7, 0, 6, 0, 3, 4, 5, 9, 7, 2, 2, 0, 5, 0, 2, 0, 9, 9, 1, 0, 1, 5, 7, 9, 1, 5, 8, 4, 3, 3, 8, 9, 9, 8, 6, 9, 8, 1, 1, 2, 9, 6, 5, 1, 9, 1, 1, 4, 1, 6, 7, 2, 8, 9, 2, 0, 0, 2, 6, 6, 7, 3, 9, 4, 8, 6, 1, 3, 5, 7, 4, 1, 7, 1, 8, 3, 1, 3, 2, 2, 5
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| L. Fejes Toth, Lagerungen in der Ebene, auf der Kugel und im Raum, 2nd. ed., Springer-Verlag, Berlin, Heidelberg 1972; see p. 213.
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FORMULA
| Equals A111003/9 . [R. J. Mathar, Dec 18 2010]
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EXAMPLE
| 0.1370778389040188697...
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MAPLE
| evalf(Pi^2/72) ;
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CROSSREFS
| Cf. A086722-A086731.
Sequence in context: A197835 A197005 A199778 * A175576 A134976 A192044
Adjacent sequences: A086726 A086727 A086728 * A086730 A086731 A086732
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KEYWORD
| nonn,cons
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jul 31 2003
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