a(n) = 1 + A_n(n), or a(n) = -1 if sequence A_n is not defined up to index n.

Terms

a(0) =2a(1) =3a(2) =2a(3) =1a(4) =3a(5) =4a(6) =1a(7) =8a(8) =9a(9) =5a(10) =64a(11) =2a(12) =317a(13) =79a(14) =17a(15) =2049a(16) =7653a(17) =26628a(18) =9a(19) =24001a(20) =232920a(21) =1145407a(23) =2058538a(24) =59a(25) =27a(26) =28a(27) =60a(28) =9272781a(29) =4a(30) =69273669