A069287 Continued fraction for rho with erf(rho) = 1/2 = erfc(rho).

0, 2, 10, 2, 1, 17, 3, 1, 12, 6, 6, 2, 2, 1, 7, 1, 6, 1, 15, 2, 1, 1, 2, 1, 1, 1, 2, 4, 1, 6, 1, 1, 1, 4, 14, 2, 10, 1, 3, 3, 4, 1, 2, 1, 8, 7, 1, 12, 2, 1, 1, 1, 6, 4, 2, 1, 2, 1, 2, 1, 3, 1, 7, 4, 2, 1, 7, 1, 1, 2, 35, 1, 13, 13, 1, 2, 9, 8, 1, 1, 11, 2, 3, 12, 15, 1, 4, 2, 2, 1, 2, 2, 7, 1, 3, 3

Offset: 0

Author

Frank Ellermann, Mar 14 2002

Keywords

• nonn
• cofr

Examples

			0.4769362762044698733814183536431305598089697490594706447...
		

Links

• G. C. Greubel, Table of n, a(n) for n = 0..5000
• Eric Weisstein's World of Mathematics, Erf.
• Eric Weisstein's World of Mathematics, Erfc.

Crossrefs

Cf. A069286 (decimal expansion).

Programs

Mathematica

ContinuedFraction[InverseErf[1/2], 50] (* G. C. Greubel, Apr 22 2018 *)