Numbers k such that k concatenated with k+5 is a lucky number.

Terms

a(0) =4a(1) =14a(2) =34a(3) =38a(4) =40a(5) =56a(6) =80a(7) =110a(8) =128a(9) =134a(10) =164a(11) =170a(12) =182a(13) =188a(14) =200a(15) =218a(16) =224a(17) =308a(18) =332a(19) =362a(20) =368a(21) =416a(22) =422a(23) =452a(24) =506a(25) =578a(26) =584a(27) =602a(28) =686a(29) =740