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A073742 Decimal expansion of sinh(1). 14
1, 1, 7, 5, 2, 0, 1, 1, 9, 3, 6, 4, 3, 8, 0, 1, 4, 5, 6, 8, 8, 2, 3, 8, 1, 8, 5, 0, 5, 9, 5, 6, 0, 0, 8, 1, 5, 1, 5, 5, 7, 1, 7, 9, 8, 1, 3, 3, 4, 0, 9, 5, 8, 7, 0, 2, 2, 9, 5, 6, 5, 4, 1, 3, 0, 1, 3, 3, 0, 7, 5, 6, 7, 3, 0, 4, 3, 2, 3, 8, 9, 5, 6, 0, 7, 1, 1, 7, 4, 5, 2, 0, 8, 9, 6, 2, 3, 3, 9, 1, 8, 4, 0, 4, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Also decimal expansion of sin(i)/i. - N. J. A. Sloane, Feb 12 2010.

REFERENCES

S. Selby, editor, CRC Basic Mathematical Tables, CRC Press, 1970, p. 218.

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..5000

Eric Weisstein's World of Mathematics, Hyperbolic Sine

Eric Weisstein's World of Mathematics, Hyperbolic Functions

Eric Weisstein's World of Mathematics, Factorial Sums

FORMULA

sinh(1) = (e - e^(-1))/2.

Equals sum_{n>=0} 1/A009445(n). See Gradsteyn-Ryzhik (0.245.6.) - R. J. Mathar, Oct 27 2012

Continued fraction representation: sinh(1) = 1 + 1/(6 - 6/(21 - 20/(43 - 42/(73 - ... - (2*n - 1)*(2*n - 2)/((2*n*(2*n + 1) + 1) - ... ))))). See A051397 for proof. Cf. A049469. - Peter Bala, Sep 02 2016

EXAMPLE

1.17520119364380145688238185059...

MATHEMATICA

First@ RealDigits@ N[Sinh@ 1, 120] (* Michael De Vlieger, Sep 04 2016 *)

PROG

(PARI) sinh(1)

CROSSREFS

Cf. A068139 (continued fraction), A073745 (csch(1)=1/A073742), A073743 (cosh(1)), A073744 (tanh(1)), A073746 (sech(1)), A073747 (coth(1)), A049469 (sin(1)), A049470 (cos(1)).

Sequence in context: A196486 A216853 A272169 * A084911 A071876 A191503

Adjacent sequences:  A073739 A073740 A073741 * A073743 A073744 A073745

KEYWORD

cons,nonn

AUTHOR

Rick L. Shepherd, Aug 07 2002

STATUS

approved

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Last modified March 22 22:17 EDT 2017. Contains 283901 sequences.