a(n) is the largest base-7 string such that the n-th number coprime to 7 does not divide any substring of a(n).

A114909

a(n) is the largest base-7 string such that the n-th number coprime to 7 does not divide any substring of a(n).

Terms

    a(0) =5a(1) =55a(2) =656a(3) =6662a(4) =55555a(5) =6565321a(6) =66566566a(7) =666566633a(8) =6666612543a(9) =65656565656a(10) =666666666513

External references