OFFSET
1,3
LINKS
Stanislav Sykora, Table of n, a(n) for n = 1..2000
FORMULA
Equals the square root of A061382.
Equals integral[-inf..+inf](exp(-x^2)*cos(k*x)) = sqrt(Pi/exp(k^2/2)), for k = sqrt(2). - Stanislav Sykora, Apr 28 2015
EXAMPLE
1.07504760349992023872275586024820851177...
MAPLE
evalf(Pi/exp(1)); # R. J. Mathar, Oct 03 2011
MATHEMATICA
RealDigits[N[Sqrt[Pi/E], 120]] (* Michael De Vlieger, Apr 30 2015 *)
PROG
(PARI) a = sqrt(Pi/exp(1)) \\ Stanislav Sykora, Apr 28 2015
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Mohammad K. Azarian, Aug 07 2004
STATUS
approved