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A377143
Decimal expansion of Integral_{x=0..oo} erfc(x)^2 dx, where erfc is the complementary error function.
2
3, 3, 0, 4, 9, 4, 6, 0, 6, 2, 9, 2, 6, 4, 7, 2, 1, 8, 0, 1, 6, 2, 6, 6, 7, 8, 3, 2, 5, 2, 7, 8, 1, 4, 3, 4, 7, 3, 6, 3, 8, 3, 9, 9, 6, 3, 2, 8, 1, 2, 8, 3, 9, 8, 3, 5, 6, 3, 1, 9, 7, 8, 4, 0, 7, 9, 9, 6, 9, 0, 8, 5, 0, 8, 4, 3, 8, 3, 1, 5, 1, 9, 7, 0, 9, 8, 2, 6, 5, 2
OFFSET
0,1
LINKS
Eric Weisstein's World of Mathematics, Erfc.
FORMULA
Equals (2 - sqrt(2))/sqrt(Pi) = A101465/A002161 (cf. eq. 11 in Weisstein link).
EXAMPLE
0.3304946062926472180162667832527814347363839963...
MATHEMATICA
First[RealDigits[(2 - Sqrt[2])/Sqrt[Pi], 10, 100]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Paolo Xausa, Oct 17 2024
STATUS
approved