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A086731 Decimal expansion of sum(1/(6*m+5)^2,m=0..infinity). 11
0, 5, 9, 9, 9, 7, 3, 4, 7, 5, 5, 5, 7, 7, 1, 5, 4, 3, 2, 8, 2, 1, 4, 6, 2, 4, 5, 3, 6, 6, 9, 5, 0, 6, 7, 3, 6, 7, 8, 1, 0, 7, 6, 7, 3, 3, 9, 4, 7, 9, 6, 0, 9, 1, 6, 0, 6, 3, 7, 3, 5, 3, 7, 1, 0, 2, 3, 6, 4, 7, 9, 1, 3, 9, 3, 8, 0, 5, 5, 7, 1, 6, 3, 6, 4, 9, 9, 4, 8, 5, 1, 0, 3, 1, 2, 1, 7, 3, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

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=0..98.

EXAMPLE

0.05999734755577...

MATHEMATICA

Join[{0}, RealDigits[1/36 PolyGamma[1, 5/6], 10, 120][[1]]] (* Harvey P. Dale, Dec 15 2011 *)

CROSSREFS

Cf. A086722-A086730.

Sequence in context: A321632 A147818 A147777 * A147776 A020846 A180014

Adjacent sequences:  A086728 A086729 A086730 * A086732 A086733 A086734

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane, Jul 31 2003

STATUS

approved

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Last modified December 3 20:56 EST 2020. Contains 338920 sequences. (Running on oeis4.)