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

Terms

a(0) =0a(1) =1a(2) =2a(3) =7a(4) =28a(5) =149a(6) =894a(7) =6483a(8) =51864a(9) =477801a(10) =4778010a(11) =53451135a(12) =641413620a(13) =8446433085a(14) =118250063190