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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A051494 Expansion of (1-x+x^2+x^3)/(1-x^2)^3. 0
1, -1, 4, -2, 9, -3, 16, -4, 25, -5, 36, -6, 49, -7, 64, -8, 81, -9, 100, -10, 121, -11, 144, -12, 169, -13, 196, -14, 225, -15, 256, -16, 289, -17, 324, -18, 361, -19, 400, -20, 441, -21, 484, -22, 529, -23, 576, -24, 625, -25, 676, -26, 729, -27, 784, -28, 841, -29, 900, -30 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

COMMENTS

Or, n^2 followed by -n. - Mohammad K. Azarian (azarian(AT)evansville.edu), Aug 29 2005

CROSSREFS

Sequence in context: A075594 A076022 A064421 * A118013 A157647 A194108

Adjacent sequences:  A051491 A051492 A051493 * A051495 A051496 A051497

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 17 16:00 EST 2012. Contains 206050 sequences.