OFFSET
1,3
REFERENCES
Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 2.3, Landau-Ramanujan constant, p. 100.
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..10000
A. Granville, Harald Cramér and the distribution of prime numbers, Scandinavian Actuarial Journal 1: 12-28, (1995) DOI:10.1080/03461238.1995.10413946.
Bernard Montaron, Exponential prime sequences, arXiv:2011.14653 [math.NT], 2020.
Simon Plouffe, Plouffe's Inverter.
S. K. Wilson and B. R. Duffy, An asymptotic analysis of small holes in thin fluid layers, Journal of Engineering Mathematics, July 1996, Volume 30, Issue 4, pp 445-457.
FORMULA
EXAMPLE
1.12291896713377033964828642958176157353142077385030633630831815209...
MATHEMATICA
RealDigits[2*Exp[-EulerGamma], 10, 111][[1]]
PROG
(PARI) default(realprecision, 100); 2*exp(-Euler) \\ G. C. Greubel, Sep 05 2018
(Magma) R:= RealField(100); 2*Exp(-EulerGamma(R)); // G. C. Greubel, Sep 05 2018
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Robert G. Wilson v, Dec 08 2006
STATUS
approved