A114911 - cp's OEIS frontend

A114911 a(n) is the largest base-9 string such that the n-th number coprime to 9 does not divide any substring of a(n).

n	a(n)
2	7
3	777
4	8787
5	886845
6	7777777
7	878754321
8	8888787871
9	887885887811
10	8878878767816
11	878787878787878
12	8888888677748678
13	888888887867751312
14	8787878787873543211
15	888878888387777136788
16	8888888888486868617568

[7, 777, 8787, 886845, 7777777, 878754321, 8888787871, 887885887811, 8878878767816, 878787878787878, 8888888677748678, 888888887867751312, 8787878787873543211, 888878888387777136788, 8888888888486868617568]

cp's OEIS Frontend

A114911 a(n) is the largest base-9 string such that the n-th number coprime to 9 does not divide any substring of a(n).

Table of values

List of values