Index of first occurrence of n in A348179, or -1 if n never appears.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =8a(9) =9a(10) =1020a(11) =11a(12) =1023a(13) =31a(14) =1024a(15) =51a(16) =1063a(17) =71a(18) =1028a(19) =91a(20) =20a(21) =21012a(22) =12a(23) =220035a(24) =24a(25) =20025a(26) =26a(27) =20074a(28) =28a(29) =220095