# A029890 (b-file synthesized from sequence entry)
1 1
2 2
3 7
4 20
5 70
6 234
7 832
8 2956
9 10759
10 39394
11 145892
12 543564
13 2038831
14 7684116
15 29092055
16 110550260
17 421495147
18 1611662256