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.
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
EXAMPLE
0.085107650259964...
MATHEMATICA
RealDigits[ PolyGamma[1, 2/3]/36, 10, 98] // First // Prepend[#, 0]& (* Jean-François Alcover, Feb 12 2013 *)
PROG
(PARI) psi'(2/3)/36 \\ Charles R Greathouse IV, Jul 19 2013
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
N. J. A. Sloane, Jul 31 2003
STATUS
approved