A372585 Decimal expansion of (25/297)*Pi^2.
8, 3, 0, 7, 7, 4, 7, 8, 1, 2, 3, 6, 4, 7, 7, 9, 9, 8, 2, 1, 8, 3, 9, 1, 4, 9, 8, 3, 0, 6, 0, 7, 3, 3, 2, 7, 8, 8, 8, 3, 5, 8, 5, 3, 5, 9, 6, 3, 0, 2, 9, 5, 1, 4, 0, 0, 7, 8, 5, 7, 6, 9, 1, 6, 0, 1, 0, 1, 3, 8, 7, 3, 9, 4, 1, 0, 1, 0, 5, 4, 2, 3, 4, 0, 2, 1, 6, 6, 1, 6
Offset: 0
Examples
0.8307747812364779982183914983060733278883585359630295140...
Links
- Paolo Xausa, Table of n, a(n) for n = 0..10000
- 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.
- Index entries for transcendental numbers
Programs
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Mathematica
First[RealDigits[25*Pi^2/297, 10, 100]]
Formula
Equals Sum_{k >= 1} A196564(k)*(1/k^2 - 1/(k+1)^2). See Sum 3 in Borwein and Borwein (1992), p. 622.