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A372605
Decimal expansion of sqrt(Pi/log(10)).
1
1, 1, 6, 8, 0, 6, 5, 2, 1, 8, 1, 4, 5, 7, 3, 4, 0, 8, 1, 5, 4, 7, 0, 3, 9, 6, 1, 1, 8, 3, 5, 6, 9, 6, 5, 6, 5, 8, 3, 5, 0, 4, 7, 0, 7, 3, 0, 1, 9, 2, 2, 3, 5, 9, 9, 5, 8, 0, 3, 7, 5, 9, 1, 6, 4, 0, 2, 1, 5, 5, 1, 0, 8, 1, 3, 0, 3, 9, 2, 4, 4, 9, 3, 4, 7, 7, 9, 2, 9, 9
OFFSET
1,3
COMMENTS
According to Borwein and Borwein (1982), this approximates (1/100)*(Sum_{k=-oo..+oo} 1/10^((k/100)^2)) to at least 18000 correct digits. See Sum 11, p. 623.
LINKS
J. M. Borwein and P. B. Borwein, Strange Series and High Precision Fraud, The American Mathematical Monthly, Vol. 99, No. 7 (1992), pp. 622-640.
FORMULA
Equals sqrt(A197071).
EXAMPLE
1.168065218145734081547039611835696565835047073019223599580...
MATHEMATICA
First[RealDigits[Sqrt[Pi/Log[10]], 10, 100]]
CROSSREFS
Sequence in context: A308314 A097909 A143819 * A021599 A072553 A089991
KEYWORD
nonn,cons
AUTHOR
Paolo Xausa, May 07 2024
STATUS
approved