# A006940 (b-file synthesized from sequence entry)
0 1
1 11
2 121
3 1001
4 11011
5 121121
6 1002001
7 11022011
8 121212121
9 1000000001
10 11000000011
11 121000000121
12 1001000001001
13 11011000011011
14 121121000121121
15 1002001001002001
16 11022011011022011
17 121212121121212121
18 1000000002000000001
19 11000000022000000011
20 121000000212000000121