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Search: id:A103645
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| A103645 |
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G.f. (108x^2+27x+1)/(1+2x-6x^2-27x^3). |
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+0
3
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| 1, 25, 64, 49, 961, 100, 6889, 12769, 18496, 225625, 4489, 1844164, 2430481, 6325225, 51724864, 124609, 480881041, 435556900, 2017536889, 11562055729, 741146176, 122363538025, 71895305689, 610401563524, 2514384233761
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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A floretion-generated sequence of squares. This sequence is related to several other sequences of squares.
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LINKS
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Index entries for sequences related to linear recurrences with constant coefficients
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FORMULA
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a(n+3) = -2a(n+2) + 6a(n+1) + 27a(n), a(0) = 1, a(1) = 25, a(2) = 64
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MATHEMATICA
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CoefficientList[ Series[(108x^2 + 27x + 1)/(1 + 2x - 6x^2 - 27x^3), {x, 0, 25}], x] (from Robert G. Wilson v Feb 12 2005)
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PROGRAM
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Floretion Algebra Multiplication Program, FAMP Code: 4ibaseiseq[ x*(+ 'i + 'j + i' + j' + 'ii' + 'jj' + 'ij' + 'ji' + e) ] where x is the sum of all (16) floretion basis vectors.
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CROSSREFS
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Cf. A103644.
Sequence in context: A044127 A044508 A166873 this_sequence A061970 A159008 A120961
Adjacent sequences: A103642 A103643 A103644 this_sequence A103646 A103647 A103648
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KEYWORD
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easy,nonn
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AUTHOR
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Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Feb 12 2005
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 12 2005
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