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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A002980 Expansion of 1/(1-sin(x)+sin(x)^2-sin(x)^3). 0
1, 0, 1, 1, -1, 3, 24, 4, 121, 5, -480, 6, -4201, 7, 48384, 8, 478801, 9, -4968960, 10, -62871601, 11, 885586944, 12, 12996863881, 13, -203910819840, 14, -3476839930201, 15, 63397697224704, 16, 1221998040867361 (list; graph; refs; listen; history; internal format)
OFFSET

0,6

CROSSREFS

Sequence in context: A204578 A120085 A062834 * A047980 A084702 A168061

Adjacent sequences:  A002977 A002978 A002979 * A002981 A002982 A002983

KEYWORD

sign

AUTHOR

N. J. A. Sloane (njas(AT)research.att.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 15 10:52 EST 2012. Contains 205763 sequences.