Expansion of e.g.f. 1/(4 - exp(x) - exp(2*x) - exp(3*x)).

A004701

Expansion of e.g.f. 1/(4 - exp(x) - exp(2*x) - exp(3*x)).

Terms

    a(0) =1a(1) =6a(2) =86a(3) =1836a(4) =52250a(5) =1858716a(6) =79345346a(7) =3951633636a(8) =224917803770

External references