A086727 - OEIS

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A086727

Decimal expansion of sum(1/(6*m+1)^2,m=0..infinity).

1, 0, 3, 6, 6, 2, 5, 3, 6, 3, 6, 7, 6, 3, 7, 9, 4, 1, 4, 3, 6, 6, 1, 3, 0, 5, 3, 2, 3, 9, 7, 0, 6, 6, 1, 1, 9, 1, 3, 4, 5, 2, 5, 5, 9, 4, 0, 7, 6, 4, 0, 2, 8, 6, 6, 8, 8, 3, 9, 9, 8, 6, 1, 5, 8, 1, 0, 9, 7, 3, 5, 2, 2, 2, 0, 8, 3, 2, 8, 3, 4, 4, 2, 5, 2, 5, 8, 6, 4, 4, 8, 6, 4, 3, 3, 8, 4, 0, 6

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OFFSET

1,3

REFERENCES

L. Fejes Toth, Lagerungen in der Ebene, auf der Kugel und im Raum, 2nd. ed., Springer-Verlag, Berlin, Heidelberg 1972; see p. 213.

LINKS

Table of n, a(n) for n=1..99.

EXAMPLE

1.0366253636763794...

MATHEMATICA

RealDigits[N[PolyGamma[1, 1/6]/36, 100]][[1]]

CROSSREFS