Concatenation of R(n) (A004086) and n, omitting leading 0's.

Terms

a(0) =11a(1) =22a(2) =33a(3) =44a(4) =55a(5) =66a(6) =77a(7) =88a(8) =99a(9) =110a(10) =1111a(11) =2112a(12) =3113a(13) =4114a(14) =5115a(15) =6116a(16) =7117a(17) =8118a(18) =9119a(19) =220a(20) =1221a(21) =2222a(22) =3223a(23) =4224a(24) =5225a(25) =6226a(26) =7227a(27) =8228a(28) =9229a(29) =330