Numbers n such that n*R(n) is a palindrome, where R(n) (A004086) = digit reversal.

Terms

a(0) =1a(1) =2a(2) =3a(3) =11a(4) =12a(5) =21a(6) =22a(7) =101a(8) =102a(9) =111a(10) =112a(11) =121a(12) =122a(13) =201a(14) =202a(15) =211a(16) =212a(17) =221a(18) =1001a(19) =1002a(20) =1011a(21) =1012a(22) =1021a(23) =1022a(24) =1101a(25) =1102a(26) =1111a(27) =1112a(28) =1121a(29) =1201