Inverse permutation to A190016: lexicographical ordering of integers 1 .. 10^4.

Terms

a(0) =1a(1) =1113a(2) =2224a(3) =3335a(4) =4446a(5) =5557a(6) =6668a(7) =7779a(8) =8890a(9) =2a(10) =114a(11) =225a(12) =336a(13) =447a(14) =558a(15) =669a(16) =780a(17) =891a(18) =1002a(19) =1114a(20) =1225a(21) =1336a(22) =1447a(23) =1558a(24) =1669a(25) =1780a(26) =1891a(27) =2002a(28) =2113a(29) =2225