Expansion of e.g.f. exp((exp(x)-1)^2/2).

Terms

a(0) =1a(1) =0a(2) =1a(3) =3a(4) =10a(5) =45a(6) =241a(7) =1428a(8) =9325a(9) =67035a(10) =524926a(11) =4429953a(12) =40010785a(13) =384853560a(14) =3925008361a(15) =42270555603a(16) =478998800290