Start with 1 and repeatedly reverse the digits and add 40 to get the next term.

Terms

a(0) =1a(1) =41a(2) =54a(3) =85a(4) =98a(5) =129a(6) =961a(7) =209a(8) =942a(9) =289a(10) =1022a(11) =2241a(12) =1462a(13) =2681a(14) =1902a(15) =2131a(16) =1352a(17) =2571a(18) =1792a(19) =3011a(20) =1143a(21) =3451a(22) =1583a(23) =3891a(24) =2023a(25) =3242a(26) =2463a(27) =3682a(28) =2903a(29) =3132