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A367898
Decimal expansion of limit_{n->oo} Product_{k=1..n} BarnesG(k/n)^(1/n).
2
4, 1, 7, 4, 2, 7, 2, 9, 7, 6, 0, 1, 4, 0, 9, 8, 6, 3, 6, 4, 3, 9, 4, 8, 4, 5, 1, 6, 2, 2, 5, 1, 6, 9, 7, 7, 0, 9, 4, 5, 9, 6, 3, 3, 2, 2, 1, 4, 1, 1, 0, 0, 8, 2, 3, 2, 1, 1, 3, 1, 7, 6, 8, 2, 0, 0, 0, 9, 5, 8, 8, 8, 9, 2, 9, 8, 5, 6, 6, 3, 7, 9, 1, 9, 4, 6, 9, 5, 0, 3, 6, 9, 4, 0, 2, 4, 5, 7, 1, 4, 8, 2, 8, 0, 7, 6
OFFSET
0,1
LINKS
Eric Weisstein's World of Mathematics, Barnes G-Function.
Wikipedia, Barnes G-function.
FORMULA
Equals exp(1/12) / (A^2 * (2*Pi)^(1/4)), where A = A074962 is the Glaisher-Kinkelin constant.
Product_{k=1..n} BarnesG(k/n) = A^(1/n - n) * exp((n - 1/n)/12) * n^(1/2 + 1/(12*n)) * (2*Pi)^((1-n)/2) * Product_{k=1..n-1} Gamma(k/n)^(k/n).
EXAMPLE
0.4174272976014098636439484516225169770945963322141100823211317682...
MATHEMATICA
RealDigits[Exp[1/12] / (Glaisher^2 * (2*Pi)^(1/4)), 10, 120][[1]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Vaclav Kotesovec, Dec 04 2023
STATUS
approved