Expansion of e.g.f. exp(x^3/3!)/(1-x).

Terms

a(0) =1a(1) =1a(2) =2a(3) =7a(4) =28a(5) =140a(6) =850a(7) =5950a(8) =47600a(9) =428680a(10) =4286800a(11) =47154800a(12) =565873000a(13) =7356349000a(14) =102988886000