Expansion of e.g.f. 1/(7- Sum_{k=1..6} exp(k*x)).

A004704

Expansion of e.g.f. 1/(7- Sum_{k=1..6} exp(k*x)).

Terms

    a(0) =1a(1) =21a(2) =973a(3) =67473a(4) =6238309a(5) =720964881a(6) =99986786773

External references