Positions where A163890 obtains distinct new values.

Terms

a(0) =0a(1) =2a(2) =4a(3) =5a(4) =24a(5) =33a(6) =68a(7) =76a(8) =96a(9) =390a(10) =536a(11) =561a(12) =1092a(13) =1093a(14) =1156a(15) =1220a(16) =1554a(17) =6242a(18) =8465a(19) =8584a(20) =8977a(21) =17953a(22) =18500a(23) =19564a(24) =99396a(25) =99873a(26) =101444a(27) =137286a(28) =143633a(29) =279620