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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A109782 Expansion of x*(1+2*x^2-2*x^3+x^4)/((x-1)*(x^2-2*x-1)*(x^2-x+1)*(x+1)^2). 0
0, 1, -2, 8, -21, 54, -134, 329, -798, 1934, -4675, 11294, -27274, 65855, -158996, 383862, -926735, 2237348, -5401448, 13040263, -31481992, 76004268, -183490549, 442985388, -1069461348, 2581908109, -6233277590, 15048463316, -36330204249, 87708871842, -211747947962 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..30.

PROG

Floretion Algebra Multiplication Program, FAMP Code: 2jbasesumseq[A*C] with A = + .5'k + .5k' + .5'ii' + .5'jj' and C = - .5'j + .5'k - .5j' + .5k' - 'ii' - .5'ij' - .5'ik' - .5'ji' - .5'ki'; sumtype: sum[Y[15]] = sum[ * ]

CROSSREFS

Sequence in context: A000160 A034519 A014409 * A237268 A216893 A264245

Adjacent sequences:  A109779 A109780 A109781 * A109783 A109784 A109785

KEYWORD

easy,sign

AUTHOR

Creighton Dement, Aug 13 2005

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified March 24 05:55 EDT 2017. Contains 283984 sequences.