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Search: id:A108929
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| A108929 |
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Expansion of (1-x^4-2*x^3)/((x-1)*(x^2+x+1)*(x^2+4*x-1)). |
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+0
1
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| 1, 4, 17, 71, 300, 1271, 5383, 22802, 96591, 409165, 1733250, 7342165, 31101909, 131749800, 558101109, 2364154235, 10014718048, 42423026427, 179706823755, 761250321446, 3224708109539, 13660082759601, 57865039147942
(list; graph; listen)
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OFFSET
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0,2
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MAPLE
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seriestolist(series((1-x^4-2*x^3)/((x-1)*(x^2+x+1)*(x^2+4*x-1)), x=0, 25)); -or- -1kbaseksum[A*B] with A = - 'i + 'j - i' + j' - 'kk' - 'ik' - 'jk' - 'ki' - 'kj' and B = + .5'i + .5i'; SumType: default
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CROSSREFS
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Sequence in context: A017955 A017956 A136792 this_sequence A022031 A001076 A122451
Adjacent sequences: A108926 A108927 A108928 this_sequence A108930 A108931 A108932
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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), Jul 19 2005
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