OFFSET
1,1
COMMENTS
Said to be Dante Alighieri's approximation to Pi.
REFERENCES
Jörg Arndt and Christoph Haenel, Pi Unleashed, New York: Springer (2001), p. 56.
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..10000
D. Castellanos, The ubiquitous pi, Math. Mag., 61 (1988), 67-98 and 148-163. [N. J. A. Sloane, Mar 24 2012]
EXAMPLE
3 + sqrt(2)/10 = 3.141421356237309504880168872..., which differs from Pi by 0.00017129735248373485...
MATHEMATICA
RealDigits[3 + Sqrt[2]/10, 10, 100][[1]] (* G. C. Greubel, Sep 27 2018 *)
PROG
(PARI) default(realprecision, 100); 3 + sqrt(2)/10 \\ G. C. Greubel, Sep 27 2018
(Magma) SetDefaultRealField(RealField(100)); 3 + Sqrt(2)/10; // G. C. Greubel, Sep 27 2018
CROSSREFS
KEYWORD
AUTHOR
Zak Seidov, Aug 18 2006
STATUS
approved