login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A012872 arcsin(sech(x)*log(x+1))=x-1/2!*x^2-6/4!*x^4+43/5!*x^5-195/6!*x^6... 0
1, -1, 0, -6, 43, -195, 1568, -15204, 151373, -1798245, 23630992, -338936730, 5409752775, -93357461015, 1736114575232, -34849328368680, 747209331349305, -17053712316379593, 413430901134512288 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..19.

CROSSREFS

Sequence in context: A101071 A299375 A097298 * A156676 A256713 A099322

Adjacent sequences:  A012869 A012870 A012871 * A012873 A012874 A012875

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

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 June 25 21:43 EDT 2019. Contains 324357 sequences. (Running on oeis4.)