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A086730
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Decimal expansion of sum(1/(6*m+4)^2,m=0..infinity).
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1
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0, 8, 5, 1, 0, 7, 6, 5, 0, 2, 5, 9, 9, 6, 4, 3, 7, 2, 4, 9, 9, 6, 4, 7, 7, 0, 0, 9, 2, 4, 3, 2, 4, 5, 8, 7, 5, 8, 9, 7, 9, 7, 0, 8, 5, 8, 4, 3, 7, 0, 5, 8, 1, 5, 5, 5, 3, 9, 6, 6, 1, 8, 4, 2, 8, 1, 3, 6, 2, 1, 7, 9, 1, 8, 5, 5, 7, 0, 0, 4, 2, 0, 5, 3, 2, 3, 8, 9, 5, 9, 2, 7, 0, 3, 9, 1, 4, 0, 1
(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
| .085107650259964... = Psi'(2/3)/36 where Psi'(x) denotes the first derivative of the digamma function - R. Piyo (nagoya314(AT)yahoo.com), Dec 12 2004
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EXAMPLE
| .085107650259964...
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CROSSREFS
| Cf. A086722-A086731.
Sequence in context: A143347 A073448 A073745 * A139721 A021058 A036792
Adjacent sequences: A086727 A086728 A086729 * A086731 A086732 A086733
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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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