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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A013331 arctan(exp(x)-sec(x))=x-1/3!*x^3-4/4!*x^4+5/5!*x^5+60/6!*x^6... 0
1, 0, -1, -4, 5, 60, -61, -2504, -8695, 100920, 873479, -6889804, -142058995, -4843020, 19728547019, 98903242096, -3531831462895, -49401992303760, 493517141932559, 17048746833049196, -29344831492412395 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..20.

CROSSREFS

Sequence in context: A135799 A041941 A220534 * A042425 A109348 A192084

Adjacent sequences:  A013328 A013329 A013330 * A013332 A013333 A013334

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 | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified May 20 02:57 EDT 2013. Contains 225446 sequences.