E.g.f.: 1/(1-sinh(x)-x-x^2/2).

A088182

E.g.f.: 1/(1-sinh(x)-x-x^2/2).

Terms

    a(0) =2a(1) =9a(2) =61a(3) =550a(4) =6201a(5) =83894a(6) =1324177a(7) =23886552a(8) =484745029a(9) =10930266652a(10) =271107065043

External references