Lucky numbers with size of gaps equal to 18 (upper terms).

Terms

a(0) =189a(1) =259a(2) =385a(3) =451a(4) =577a(5) =673a(6) =717a(7) =1357a(8) =1387a(9) =1563a(10) =1693a(11) =1857a(12) =2019a(13) =2113a(14) =2239a(15) =2301a(16) =2545a(17) =2625a(18) =2689a(19) =2715a(20) =2815a(21) =3073a(22) =3381a(23) =4063a(24) =4431a(25) =4483a(26) =4539a(27) =5253a(28) =5277a(29) =5737