Remove in decimal representation of A254143(n) all repeated digits.

Terms

a(0) =1a(1) =4a(2) =7a(3) =16a(4) =28a(5) =34a(6) =37a(7) =49a(8) =67a(9) =136a(10) =148a(11) =238a(12) =259a(13) =268a(14) =34a(15) =37a(16) =367a(17) =469a(18) =67a(19) =156a(20) =1258a(21) =136a(22) =1348a(23) =1369a(24) =1468a(25) =278a(26) =238a(27) =2359a(28) =2479a(29) =2569