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Search: id:A110309
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| A110309 |
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Expansion of (1+3*x+x^2)/((x^2+5*x+1)*(x^2+x+1)). |
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+0
5
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| 1, -3, 12, -57, 275, -1320, 6325, -30303, 145188, -695637, 3332999, -15969360, 76513801, -366599643, 1756484412, -8415822417, 40322627675, -193197315960, 925663952125, -4435122444663, 21249948271188, -101814618911277, 487823146285199, -2337301112514720
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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a(n+2) = - 5*a(n+1) - a(n) + ((-1)^n)*A109265(n+3)
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MAPLE
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seriestolist(series((1+3*x+x^2)/((x^2+5*x+1)*(x^2+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'
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CROSSREFS
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Cf. A110307, A110308, A110310.
Sequence in context: A001277 A106570 A027140 this_sequence A101106 A165310 A133158
Adjacent sequences: A110306 A110307 A110308 this_sequence A110310 A110311 A110312
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KEYWORD
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easy,sign
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AUTHOR
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Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Jul 19 2005
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