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A110211
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a(n+3) = 6*a(n) - 5*a(n+2), a(0) = -1, a(1) = 3, a(2) = -15.
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3
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-1, 3, -15, 69, -327, 1545, -7311, 34593, -163695, 774609, -3665487, 17345265, -82078671, 388400433, -1837930575, 8697180849, -41155501647, 194749924785, -921566538831, 4360899684273, -20635998872655, 97650595130289, -462087577545807, 2186621894493105
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| G.f. (1+2*x)/((x-1)*(6*x^2+6*x+1))
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MAPLE
| seriestolist(series((1+2*x)/((x-1)*(6*x^2+6*x+1)), x=0, 25)); -or- Floretion Algebra Multiplication Program, FAMP Code: 1kbasesumseq[A*B] with A = + 'i + 'ii' + 'ij' + 'ik' and B = + .5'i - .5'j + .5'k + .5i' + .5j' - .5k' - .5'ij' - .5'ik' + .5'ji' + .5'ki' Sumtype is set to: sum[(Y[0], Y[1], Y[2]), mod(3)
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CROSSREFS
| Cf. A110210, A110212, A110213.
Sequence in context: A052981 A086200 A122558 * A167874 A033876 A009174
Adjacent sequences: A110208 A110209 A110210 * A110212 A110213 A110214
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KEYWORD
| easy,sign
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AUTHOR
| Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Jul 16 2005
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