Expansion of e.g.f. log(1 - log(1 - x)/(1 - x)).

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =9a(5) =28a(6) =140a(7) =936a(8) =6902a(9) =54160a(10) =467784a(11) =4578000a(12) =50434032a(13) =609309504a(14) =7921524624a(15) =110242136928