Expansion of e.g.f. arctan(log(x+1) - arcsin(x)).

Terms

a(0) =0a(1) =0a(2) =-1a(3) =1a(4) =-6a(5) =15a(6) =-90a(7) =285a(8) =-1960a(9) =2275a(10) =-20160a(11) =-739125a(12) =5484600a(13) =-142631775a(14) =978257280a(15) =-20452770975a(16) =62899668000