A378942 Decimal expansion of (1/sqrt(Pi) + e*erfc(-1))/2.

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

Offset

1,1

References

Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 4.6, p. 262.

Links

Table of n, a(n) for n=1..100.

Formula

Equals (1 + e*sqrt(Pi)*(1 + erf(1)))/(2*sqrt(Pi)).

Example

2.7865848321550198766289520248877912002691926567823...

Mathematica

RealDigits[(1/Sqrt[Pi]+E Erfc[-1])/2, 10, 100][[1]]

Crossrefs

Cf. A001113, A019739, A087197, A087198, A099286.

Sequence in context: A129603 A263809 A102268 * A155062 A021786 A256514

Adjacent sequences: A378939 A378940 A378941 * A378943 A378944 A378945

Keyword

nonn,cons

Author

Stefano Spezia, Dec 11 2024

Status

approved