Search: id:A109781
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%I A109781
%S A109781 1,3,6,11,27,60,141,337,808,1943,4687,11306,27287,65869,159012,383877,
               926753,
%T A109781 2237366,5401467,13040283,31482014,76004289,183490573,442985412,1069461373,
%U A109781 2581908135,6233277618,15048463343,36330204279,87708871872,211747947993
%V A109781 -1,3,-6,11,-27,60,-141,337,-808,1943,-4687,11306,-27287,65869,-159012,
               383877,-926753,
%W A109781 2237366,-5401467,13040283,-31482014,76004289,-183490573,442985412,-1069461373,
%X A109781 2581908135,-6233277618,15048463343,-36330204279,87708871872,-211747947993
%N A109781 Expansion of (-1+x+2*x^2-6*x^3+x^4+x^5)/((x-1)*(x^2-x+1)*(x^2-2*x-1)*(x+1)^2).
%o A109781 Floretion Algebra Multiplication Program, FAMP Code: 1tessumseq[A*C] 
               with A = + .5'k + .5k' + .5'ii' + .5'jj' and C = - .5'j + .5'k - 
               .5j' + .5k' - 'ii' - .5'ij' - .5'ik' - .5'ji' - .5'ki'; sumtype: 
               sum[Y[15]] = sum[ * ]
%Y A109781 Sequence in context: A051284 A001867 A000998 this_sequence A101958 A153982 
               A119367
%Y A109781 Adjacent sequences: A109778 A109779 A109780 this_sequence A109782 A109783 
               A109784
%K A109781 easy,sign
%O A109781 0,2
%A A109781 Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Aug 13 2005

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