Numbers with a single 2 in their base 5 expansion.

Terms

a(0) =2a(1) =7a(2) =10a(3) =11a(4) =13a(5) =14a(6) =17a(7) =22a(8) =27a(9) =32a(10) =35a(11) =36a(12) =38a(13) =39a(14) =42a(15) =47a(16) =50a(17) =51a(18) =53a(19) =54a(20) =55a(21) =56a(22) =58a(23) =59a(24) =65a(25) =66a(26) =68a(27) =69a(28) =70a(29) =71