Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A012684
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A012684 tanh(tanh(x)*arctan(x))=2/2!*x^2-16/4!*x^4+80/6!*x^6+14464/8!*x^8... +0
1
2, -16, 80, 14464, -1924352, 182456320, -4821633024, -5022496751616, 2274499602284544, -641508042469015552, 58440162971714846720, 91048038738283980652544, -93320295604487977397387264 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A028336 A045905 A012680 this_sequence A053587 A052346 A071893

Adjacent sequences: A012681 A012682 A012683 this_sequence A012685 A012686 A012687

KEYWORD

sign

AUTHOR

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

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 6 19:58 EST 2009. Contains 170429 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.