E.g.f.: ((1+x)/(1-x))^(1/3)*((1+x+x^2)/(1-x+x^2))^(1/6).

A123014

E.g.f.: ((1+x)/(1-x))^(1/3)*((1+x+x^2)/(1-x+x^2))^(1/6).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =25a(6) =145a(7) =1225a(8) =7105a(9) =28945a(10) =165025a(11) =4675825a(12) =62610625a(13) =961986025a(14) =10237051825a(15) =76785333625a(16) =824649450625

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