A103988 Decimal expansion of Integral_{x>=0} exp(-2x^2)*erf(x)^2 dx.

1, 3, 5, 5, 7, 5, 3, 1, 1, 6, 2, 2, 2, 0, 2, 6, 0, 1, 6, 0, 8, 2, 5, 4, 5, 5, 1, 0, 2, 2, 1, 5, 0, 5, 4, 6, 0, 7, 2, 6, 1, 5, 5, 8, 9, 3, 9, 7, 5, 2, 2, 9, 6, 4, 9, 9, 3, 1, 2, 5, 0, 5, 0, 0, 3, 3, 7, 0, 0, 9, 2, 7, 8, 8, 0, 7, 2, 9, 4, 7, 2, 5, 9, 2, 2, 1, 8, 3, 9, 7, 1, 0, 1, 2, 6, 4, 7, 5, 3, 7, 5, 8

Offset

0,2

Links

Table of n, a(n) for n=0..101.

Eric Weisstein's World of Mathematics, Hypercube Line Picking

Example

0.13557531162220260160825455102215054607261558939752296499312505003370092788...

Maple

evalf(Integrate(exp(-2*x^2)*erf(x)^2, x = 0..infinity), 120); # Vaclav Kotesovec, Nov 02 2019

Mathematica

Clear[f]; f[n_] := f[n] = RealDigits[ NIntegrate[Exp[-2 x^2]*Erf[x]^2, {x, 0, n}, WorkingPrecision -> 110], 10, 102] // First; f[10]; f[n = 20]; While[f[n] != f[n-10], n = n+10]; f[n] (* Jean-François Alcover, Feb 07 2013 *)

Crossrefs

Sequence in context: A179858 A141501 A277776 * A285204 A086269 A057952

Adjacent sequences: A103985 A103986 A103987 * A103989 A103990 A103991

Keyword

nonn,cons

Author

Eric W. Weisstein, Feb 23 2005

Status

approved