Positive numbers having the same set of digits in base 7 and base 9.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =31a(7) =99a(8) =198a(9) =248a(10) =297a(11) =749a(12) =1163a(13) =1471a(14) =1498a(15) =1577a(16) =1831a(17) =2247a(18) =3413a(19) =3988a(20) =4473a(21) =4491a(22) =4500a(23) =4509a(24) =4788a(25) =4789a(26) =4790a(27) =4791a(28) =4792a(29) =4793