Expansion of e.g.f. 1/(3 - exp(x) - exp(2*x)).

A004700

Expansion of e.g.f. 1/(3 - exp(x) - exp(2*x)).

Terms

    a(0) =1a(1) =3a(2) =23a(3) =261a(4) =3947a(5) =74613a(6) =1692563a(7) =44794221a(8) =1354849547a(9) =46101247173

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