login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A249673 Decimal expansion of Product_{n>=1} cosh(1/n). 6
2, 1, 1, 6, 4, 6, 5, 5, 3, 6, 5, 0, 5, 4, 8, 4, 7, 7, 5, 8, 7, 8, 5, 7, 2, 2, 2, 7, 0, 2, 5, 8, 3, 1, 9, 8, 8, 1, 4, 8, 0, 8, 9, 3, 9, 2, 8, 0, 9, 0, 8, 2, 5, 6, 8, 2, 8, 1, 3, 4, 8, 0, 7, 8, 6, 9, 4, 2, 3, 8, 3, 0, 7, 2, 8, 9, 0, 1, 1, 7, 2, 9, 9, 6, 1, 9, 3, 4, 6, 5, 9, 2, 4, 3, 1, 0, 8, 8, 9, 4, 2, 8, 6, 3, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..105.

EXAMPLE

2.116465536505484775878572227025831988148089392809082568281348...

MAPLE

evalf(exp(sum(log(cosh(1/n)), n=1..infinity)), 100)

PROG

(PARI) default(realprecision, 120); exp(sumpos(k=1, log(cosh(1/k))))

CROSSREFS

Cf. A118817, A230821, A051762, A218504, A246945, A270614.

Sequence in context: A135899 A327816 A047920 * A144655 A190782 A330490

Adjacent sequences:  A249670 A249671 A249672 * A249674 A249675 A249676

KEYWORD

nonn,cons

AUTHOR

Vaclav Kotesovec, Nov 03 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 19 22:04 EST 2020. Contains 332060 sequences. (Running on oeis4.)