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A229174 Decimal expansion of -int(x*cos(x)/(1+x^2),x=0..infinity). 1
0, 5, 0, 4, 1, 3, 7, 6, 0, 4, 5, 5, 9, 3, 5, 9, 9, 7, 2, 1, 2, 2, 0, 0, 0, 9, 1, 2, 7, 5, 1, 3, 6, 1, 0, 9, 6, 2, 1, 4, 9, 8, 7, 8, 5, 4, 0, 0, 9, 1, 0, 3, 6, 7, 8, 7, 3, 2, 8, 4, 9, 4, 8, 6, 5, 3, 5, 6, 3, 4, 4, 8, 0, 4, 0, 1, 3, 4, 9, 2, 6, 0, 7, 9, 3, 3, 5, 0, 1, 6, 6, 0, 4, 8, 6, 3, 1, 7, 6, 8, 3, 0, 9, 7, 6, 2, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 424-425.

LINKS

Table of n, a(n) for n=0..106.

FORMULA

(e^2*Ei(-1)+Ei(1))/(2*e) where Ei is the exponential integral function. - Jean-François Alcover, Feb 19 2014

EXAMPLE

.050413760455935997212200091275136109621498785400910367873

MATHEMATICA

Join[{0}, (E^2*ExpIntegralEi[-1] + ExpIntegralEi[1])/(2*E) // RealDigits[#, 10, 106]& // First] (* Jean-François Alcover, Feb 19 2014 *)

CROSSREFS

Cf. A216184, A086056.

Sequence in context: A016581 A175472 A099220 * A021956 A139341 A159575

Adjacent sequences:  A229171 A229172 A229173 * A229175 A229176 A229177

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane, Sep 28 2013

STATUS

approved

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Last modified October 15 17:24 EDT 2019. Contains 328037 sequences. (Running on oeis4.)