Expansion of e.g.f. exp( x * exp(x)^2 ).

Terms

a(0) =1a(1) =1a(2) =5a(3) =25a(4) =153a(5) =1121a(6) =9373a(7) =87417a(8) =898033a(9) =10052353a(10) =121492341a(11) =1573957529a(12) =21729801481a(13) =318121178337