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A110308 Expansion of -x*(2+x)/((x^2+x+1)*(x^2+5*x+1)). 4
0, -2, 11, -52, 247, -1182, 5664, -27140, 130037, -623044, 2985181, -14302860, 68529120, -328342742, 1573184591, -7537580212, 36114716467, -173036002122, 829065294144, -3972290468600, 19032387048857, -91189644775684, 436915836829561, -2093389539372120 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..23.

FORMULA

a(n+2) = - 5*a(n+1) - a(n) - A099837(n+2)

MAPLE

seriestolist(series(-x*(2+x)/((x^2+x+1)*(x^2+5*x+1)), x=0, 25)); -or- Floretion Algebra Multiplication Program, FAMP Code: 1kbaseseq[A*B] with A = - 'j + 'k - j' + k' - 'ii' - 'ij' - 'ik' - 'ji' - 'ki' and B = + .5'i + .5'ii' + .5'ij' + .5'ik'

CROSSREFS

Cf. A110307, A110309, A110310.

Sequence in context: A026986 A181290 A026996 * A027201 A026933 A052171

Adjacent sequences:  A110305 A110306 A110307 * A110309 A110310 A110311

KEYWORD

easy,sign

AUTHOR

Creighton Dement, Jul 19 2005

STATUS

approved

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Last modified December 21 07:06 EST 2014. Contains 252297 sequences.