Expansion of (-3+4*x+3*x^2)/((1-x)*(x+1)*(x^2+2*x-1)); a Pellian-related sequence.
3, 2, 7, 12, 31, 70, 171, 408, 987, 2378, 5743, 13860, 33463, 80782, 195027, 470832
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Thu Nov 19 17:19:12 CET 2009 [seqfan] detective work related to Creighton Dement's "Floretions"