A086731 - OEIS

%I #8 Apr 10 2016 05:17:26

%S 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,

%T 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,

%U 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

%N Decimal expansion of sum(1/(6*m+5)^2,m=0..infinity).

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

%e 0.05999734755577...

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

%Y Cf. A086722-A086730.

%K nonn,cons

%O 0,2

%A _N. J. A. Sloane_, Jul 31 2003