Numbers k such that k concatenated with k+1 is a lucky number.

Terms

a(0) =6a(1) =10a(2) =18a(3) =30a(4) =40a(5) =46a(6) =52a(7) =54a(8) =60a(9) =66a(10) =76a(11) =82a(12) =114a(13) =138a(14) =144a(15) =160a(16) =162a(17) =178a(18) =196a(19) =210a(20) =214a(21) =234a(22) =240a(23) =246a(24) =252a(25) =258a(26) =264a(27) =274a(28) =306a(29) =312