Multiples of 7 containing only odd digits.

Terms

a(0) =7a(1) =35a(2) =77a(3) =91a(4) =119a(5) =133a(6) =175a(7) =315a(8) =357a(9) =371a(10) =399a(11) =511a(12) =539a(13) =553a(14) =595a(15) =735a(16) =777a(17) =791a(18) =917a(19) =931a(20) =959a(21) =973a(22) =1113a(23) =1155a(24) =1197a(25) =1337a(26) =1351a(27) =1379a(28) =1393a(29) =1519