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

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =13a(5) =51a(6) =271a(7) =1366a(8) =8849a(9) =58717a(10) =432541a(11) =3530176a(12) =29787781a(13) =279974839a(14) =2715912291a(15) =28415168146a(16) =312503079841