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

 

Logo

The OEIS is looking to hire part-time people to help edit core sequences, upload scanned documents, process citations, fix broken links, etc. - Neil Sloane, njasloane@gmail.com

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A012863 Numerators of coefficients in Taylor series expansion of  log(cotan(x)*log(x+1)). 1
0, -1, -1, -1, 3, -19, 59, -751, 174989, -2857, 2249927, -434293, 32401403009, -8181904909, 1150205658377, -5044289, 64371087485333, -5026792806787, 3500507461200889, -69028763155644023, 67179942704167004419, -1022779523247467, 348074852007121792219, -750218743980105669781, 129827894444079903690116761 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..24.

EXAMPLE

-1/2*x-1/8*x^2-1/8*x^3+3/320*x^4-19/288*x^5+59/1920*x^6-751/17280*x^7+...

MATHEMATICA

Numerator[CoefficientList[Series[Log[Cot[x]Log[x+1]], {x, 0, 30}], x]] (* Harvey P. Dale, Nov 04 2012 *)

CROSSREFS

Cf. A202619.

Sequence in context: A106875 A215646 A182353 * A269156 A041015 A185448

Adjacent sequences:  A012860 A012861 A012862 * A012864 A012865 A012866

KEYWORD

sign,frac

AUTHOR

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

EXTENSIONS

Corrected by N. J. A. Sloane, Dec 21 2011

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified May 25 21:43 EDT 2017. Contains 287059 sequences.