E.g.f.: arctanh(arctanh(x)-log(x+1)).

A013301

E.g.f.: arctanh(arctanh(x)-log(x+1)).

Terms

    a(0) =0a(1) =1a(2) =6a(3) =150a(4) =7560a(5) =650160a(6) =84823200a(7) =15617281680

External references