A244345 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A244345

Decimal expansion of xi_3 = 5*G, the volume of an ideal hyperbolic cube, where G is Gieseking's constant.

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

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

1,1

REFERENCES

Steven R. Finch, Mathematical Constants, Cambridge, 2003, Section 8.9 Hyperbolic Volume Constants p. 512.

LINKS

Table of n, a(n) for n=1..104.

Eric Weisstein's MathWorld, Gieseking's Constant

Eric Weisstein's MathWorld, Polygamma Function

FORMULA

5*(9 - Polygamma(1, 2/3) + Polygamma(1, 4/3)) / (4*sqrt(3)).

EXAMPLE