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Search: id:A098111
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| 1, 0, -5, -25, -100, -375, -1375, -5000, -18125, -65625, -237500, -859375, -3109375, -11250000, -40703125, -147265625, -532812500, -1927734375, -6974609375, -25234375000, -91298828125, -330322265625, -1195117187500, -4323974609375, -15644287109375, -56601562500000
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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A030191(n) + 2a(n) + A093129(n+2) = 4A093129(n+1) - Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Oct 18 2004
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FORMULA
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G.f.: (1-5x)/(1-5x+5x^2).
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PROGRAM
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Floretion Algebra Multiplication Program, FAMP
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CROSSREFS
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Sequence in context: A055343 A146830 A022729 this_sequence A083877 A146882 A067971
Adjacent sequences: A098108 A098109 A098110 this_sequence A098112 A098113 A098114
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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), Sep 23 2004
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EXTENSIONS
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More terms from David Wasserman (dwasserm(AT)earthlink.net), Jan 16 2008
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