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

Terms

a(0) =0a(1) =1a(2) =3a(3) =10a(4) =39a(5) =176a(6) =905a(7) =5244a(8) =34111a(9) =250480a(10) =2108529a(11) =20751380a(12) =241315151a(13) =3282366504a(14) =50786289385a(15) =865850559196