OFFSET
0,1
LINKS
Stanislav Sykora, Table of n, a(n) for n = 0..2000
Eric Weisstein's World of Mathematics, Dawson's Integral
Wikipedia, Dawson function
EXAMPLE
0.284749439656846482522031574467734174546625527706284741687607595170...
PROG
(PARI) Erfi(z) = -I*(1.0-erfc(I*z));
Dawson(z) = 0.5*sqrt(Pi)*exp(-z*z)*Erfi(z); \\ same as F(x)=D_+(x)
DDawson(z) = 1.0 - 2*z*Dawson(z); \\ 1st derivative of the above
D2Dawson(z) = -2.0*(z + (1.0-2.0*z*z)*Dawson(z)); \\ 2nd derivative
xinfl = solve(z=1.0, 2.0, real(D2Dawson(z)));
x = -DDawson(xinfl);
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Stanislav Sykora, Sep 17 2014
STATUS
approved