a(n) is the least number that is the sum of an emirp and its reversal in exactly n ways.

Terms

a(0) =44a(1) =1090a(2) =10450a(3) =5104a(4) =88888a(5) =10780a(6) =289982a(7) =299992a(8) =482174a(9) =478874a(10) =868868a(11) =499994a(12) =1073270a(13) =1087790a(14) =1071070a(15) =1069970a(16) =10904990a(17) =10794980a(18) =1091090a(19) =10892990a(20) =1100000a(21) =29955992a(22) =1101100a(23) =26688662a(24) =31022002a(25) =27599572a(26) =46400354a(27) =44688644a(28) =29821792a(29) =45289244