Numbers n for which there are exactly nine k such that n = k + reverse(k).

Terms

a(0) =99a(1) =110a(2) =121a(3) =909a(4) =929a(5) =949a(6) =969a(7) =989a(8) =1009a(9) =1010a(10) =1029a(11) =1030a(12) =1049a(13) =1050a(14) =1069a(15) =1070a(16) =1089a(17) =1090a(18) =1110a(19) =1130a(20) =1150a(21) =1170a(22) =1190a(23) =1881a(24) =2101a(25) =3223a(26) =4763a(27) =9009a(28) =10010a(29) =10989