G.f.: Product_{n>=1} [ (1 - (-x)^n) / (1 - (n-1)^n*x^n) ]^(1/n).

A206763

G.f.: Product_{n>=1} [ (1 - (-x)^n) / (1 - (n-1)^n*x^n) ]^(1/n).

Terms

    a(0) =1a(1) =1a(2) =0a(3) =3a(4) =23a(5) =225a(6) =2824a(7) =42670a(8) =762286a(9) =15647321a(10) =363901749a(11) =9443387329a(12) =270721307582

External references