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A254968
Decimal expansion of the mean reciprocal Euclidean distance from a point in a unit cube to a given vertex of the cube (named B_3(-1) in Bailey's paper).
2
1, 1, 9, 0, 0, 3, 8, 6, 8, 1, 9, 8, 9, 7, 7, 6, 7, 5, 3, 3, 2, 1, 9, 0, 8, 6, 7, 5, 1, 4, 2, 0, 7, 6, 9, 4, 4, 9, 9, 1, 1, 8, 0, 6, 0, 7, 3, 5, 7, 4, 9, 8, 2, 6, 4, 4, 0, 8, 9, 7, 2, 2, 3, 7, 3, 0, 3, 7, 3, 6, 1, 7, 6, 5, 5, 3, 1, 1, 3, 7, 1, 4, 4, 5, 4, 3, 1, 9, 8, 1, 3, 8, 3, 9, 6, 2, 3, 4, 0, 8, 3, 3, 9, 1, 6
OFFSET
1,3
LINKS
D. H. Bailey, J. M. Borwein and R. E. Crandall, Box Integrals, J. Comp. Appl. Math., Vol. 206, No. 1 (2007), pp. 196-208.
D. H. Bailey, J. M. Borwein, and R. E. Crandall, Advances in the theory of box integrals, Math. Comp. 79 (271) (2010) 1839-1866, Table 2.
Eric Weisstein's MathWorld, Box Integral.
FORMULA
Equals B_3(-1) = (3/2)*log(2 + sqrt(3)) - Pi/4.
Equals log(7 + 4*sqrt(3)) - Pi/4 - arcsinh(1/sqrt(2)).
EXAMPLE
1.1900386819897767533219086751420769449911806073574982644...
MATHEMATICA
RealDigits[(3/2)*Log[2 + Sqrt[3]] - Pi/4, 10, 105] // First
CROSSREFS
KEYWORD
nonn,cons,easy
AUTHOR
EXTENSIONS
Name corrected by Amiram Eldar, Jun 04 2023
STATUS
approved