Numbers whose base-5 and base-7 expansions have no digits in common.

Terms

a(0) =5a(1) =6a(2) =10a(3) =12a(4) =13a(5) =15a(6) =16a(7) =18a(8) =19a(9) =20a(10) =21a(11) =22a(12) =24a(13) =25a(14) =26a(15) =27a(16) =30a(17) =31a(18) =32a(19) =33a(20) =40a(21) =41a(22) =42a(23) =44a(24) =45a(25) =47a(26) =48a(27) =60a(28) =62a(29) =78