E.g.f.: exp(Sum_{n>=1} A000009(n-1)*x^n/n).

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =30a(5) =174a(6) =1284a(7) =11148a(8) =110604a(9) =1215180a(10) =15066936a(11) =205333416a(12) =3031876872a(13) =48536481096a(14) =834192650160