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

Terms

a(0) =55a(1) =154a(2) =505a(3) =525a(4) =545a(5) =565a(6) =585a(7) =605a(8) =625a(9) =645a(10) =665a(11) =685a(12) =1414a(13) =1434a(14) =1441a(15) =1454a(16) =1474a(17) =1494a(18) =1514a(19) =1534a(20) =1554a(21) =1574a(22) =1594a(23) =2541a(24) =5005a(25) =6985a(26) =14014a(27) =14041a(28) =14241a(29) =14441