0,2
G.f.: (2x^3-4x^2+2x)/(1-4x+2x^2)^2.
Sequence in context: A005038 A094780 A100103 this_sequence A001758 A037133 A009618
Adjacent sequences: A054142 A054143 A054144 this_sequence A054146 A054147 A054148
nonn
Clark Kimberling (ck6(AT)evansville.edu), Mar 18 2000
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