Expansion of 1/(1 - x*exp(x) + x^2*exp(2*x) - x^3*exp(3*x)).

A003017

Expansion of 1/(1 - x*exp(x) + x^2*exp(2*x) - x^3*exp(3*x)).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =28a(5) =605a(6) =9366a(7) =116767a(8) =1310408a(9) =15812505a(10) =263924650a(11) =6018875291a(12) =148630870092

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