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A214174 Decimal expansion of the integral from 0 to infinity of x/cosh(Pi*x) dx. 1
1, 8, 5, 6, 1, 3, 4, 3, 6, 3, 5, 5, 3, 8, 6, 0, 8, 1, 4, 7, 6, 9, 8, 1, 9, 9, 0, 1, 9, 9, 7, 1, 9, 9, 8, 5, 6, 0, 9, 4, 3, 0, 4, 5, 9, 1, 3, 1, 2, 9, 3, 2, 0, 5, 4, 0, 7, 6, 0, 1, 9, 1, 9, 3, 9, 1, 1, 2, 6, 1, 2, 1, 2, 8, 7, 5, 7, 7, 7, 5, 1, 7, 9, 1, 7, 2, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..10000

FORMULA

Equals A060294*A143233 = 2*C/Pi^2, where C is Catalan's constant (A006752).

EXAMPLE

0.1856134363553860814769819901997199856094304591312932054076019...

MATHEMATICA

RealDigits[2 Catalan/Pi^2, 10, 90][[1]]

PROG

(PARI) default(realprecision, 100); 2*Catalan/Pi^2 \\ G. C. Greubel, Aug 25 2018

(MAGMA) SetDefaultRealField(RealField(100)); R:=RealField(); 2*Catalan(R)/Pi(R)^2; // G. C. Greubel, Aug 25 2018

CROSSREFS

Cf. A020761, A020821, A060294, A143233.

Sequence in context: A011107 A318335 A243379 * A154433 A107828 A256155

Adjacent sequences:  A214171 A214172 A214173 * A214175 A214176 A214177

KEYWORD

nonn,cons

AUTHOR

Bruno Berselli, Mar 20 2013

STATUS

approved

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Last modified May 27 02:54 EDT 2019. Contains 323597 sequences. (Running on oeis4.)