Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A012391
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A012391 arcsinh(tan(x)*tan(x))=2/2!*x^2+16/4!*x^4+152/6!*x^6-5504/8!*x^8... +0
2
2, 16, 152, -5504, -865888, -49313024, 10192998272, 4634262163456, 729893872005632, -280859292338008064, -286057930617679095808, -94104910901654903619584, 51677977224364973979901952 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A103885 A124578 A085510 this_sequence A012387 A009518 A052674

Adjacent sequences: A012388 A012389 A012390 this_sequence A012392 A012393 A012394

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 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research

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