A086726 - OEIS

%I #8 Apr 30 2015 09:53:26

%S 0,4,5,6,9,2,6,1,2,9,6,8,0,0,6,2,8,9,9,0,2,0,1,1,5,3,2,4,0,6,8,3,4,0,

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

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

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

%F Pi^2/216.

%e .0456926129680062899...

%t Join[{0},RealDigits[Pi^2/216,10,120][[1]]] (* _Harvey P. Dale_, Apr 30 2015 *)

%Y Cf. A086722-A086731.

%K nonn,cons

%O 0,2

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