Lucky numbers with size of gaps equal to 20 (lower terms).

Terms

a(0) =937a(1) =1777a(2) =2923a(3) =2983a(4) =3007a(5) =3133a(6) =3727a(7) =4207a(8) =4675a(9) =4741a(10) =5191a(11) =5527a(12) =5617a(13) =6601a(14) =7609a(15) =7717a(16) =8233a(17) =8515a(18) =9895a(19) =9937a(20) =10153a(21) =10291a(22) =10321a(23) =11137a(24) =12337a(25) =12499a(26) =12679a(27) =13657a(28) =13873a(29) =14755