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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A012682 sinh(tanh(x)*arctan(x))=2/2!*x^2-16/4!*x^4+440/6!*x^6-25856/8!*x^8... 0
2, -16, 440, -25856, 2460448, -335955200, 62060029824, -14940576792576, 4555904588849664, -1719063029232504832, 787080093043649165312, -430107147338505961406464, 276606088476056370612084736 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

CROSSREFS

Sequence in context: A009397 A009700 A012030 * A012678 A012146 A113109

Adjacent sequences:  A012679 A012680 A012681 * A012683 A012684 A012685

KEYWORD

sign

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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 February 16 13:02 EST 2012. Contains 205909 sequences.