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

Terms

a(0) =171a(1) =241a(2) =367a(3) =433a(4) =559a(5) =655a(6) =699a(7) =1339a(8) =1369a(9) =1545a(10) =1675a(11) =1839a(12) =2001a(13) =2095a(14) =2221a(15) =2283a(16) =2527a(17) =2607a(18) =2671a(19) =2697a(20) =2797a(21) =3055a(22) =3363a(23) =4045a(24) =4413a(25) =4465a(26) =4521a(27) =5235a(28) =5259a(29) =5719