A114909 - cp's OEIS frontend

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).

n	a(n)
2	5
3	55
4	656
5	6662
6	55555
7	6565321
8	66566566
9	666566633
10	6666612543
11	65656565656
12	666666666513
13	66656665654315
14	656565653543211
15	6666666666666212
16	66566566566566566
17	665665665623461651

[5, 55, 656, 6662, 55555, 6565321, 66566566, 666566633, 6666612543, 65656565656, 666666666513, 66656665654315, 656565653543211, 6666666666666212, 66566566566566566, 665665665623461651]

cp's OEIS Frontend

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).

Table of values

List of values