# A117611 (b-file synthesized from sequence entry)
0 1
1 11
2 91
3 1001
4 11011
5 91091
6 999001
7 10989011
8 90909091
9 1000000001
10 11000000011
11 91000000091
12 1001000001001
13 11011000011011
14 91091000091091
15 999001000999001
16 10989011010989011
17 90909091090909091
18 999999999000000001