OFFSET
1,1
LINKS
Paolo Xausa, Table of n, a(n) for n = 1..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.
FORMULA
Approximately 339/127, correct to 67 digits: see Example 4.1 (a) in Borwein and Borwein (1992), p. 633.
EXAMPLE
2.669291338582677165354330708661417322834645669291338582677...
MATHEMATICA
First[RealDigits[Sum[Floor[Pi*k/2]/2^k, {k, 400}], 10, 100]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Paolo Xausa, May 07 2024
STATUS
approved