E.g.f. equals the real part of the i-th iteration of (x + x^2), where i=sqrt(-1).

A179200

E.g.f. equals the real part of the i-th iteration of (x + x^2), where i=sqrt(-1).

Terms

    a(0) =0a(1) =1a(2) =0a(3) =-6a(4) =60a(5) =-600a(6) =5880a(7) =-38640a(8) =-624960a(9) =45077760a(10) =-1773129600a(11) =58531809600

External references