Step at which n is expelled in Kimberling's puzzle (A035486).

Terms

a(0) =1a(1) =25a(2) =2a(3) =4a(4) =3a(5) =22a(6) =6a(7) =8a(8) =10a(9) =5a(10) =32a(11) =83a(12) =44a(13) =14a(14) =7a(15) =66a(16) =169a(17) =11a(18) =49595a(19) =9a(20) =69a(21) =16a(22) =24a(23) =12a(24) =43a(25) =47a(26) =7598a(27) =15a(28) =133a(29) =109