a(n) is the smallest number not yet in the sequence such that the concatenation of all terms yields a periodic stream of digits 1, 2, 3, ..., 7 (repeat from 1).

A165305

a(n) is the smallest number not yet in the sequence such that the concatenation of all terms yields a periodic stream of digits 1, 2, 3, ..., 7 (repeat from 1).

Terms

    a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =12a(8) =34a(9) =56a(10) =71a(11) =23a(12) =45a(13) =67a(14) =123a(15) =456a(16) =712a(17) =345a(18) =671a(19) =234a(20) =567a(21) =1234a(22) =5671a(23) =2345a(24) =6712a(25) =3456a(26) =7123a(27) =4567a(28) =12345a(29) =67123

External references