# A212531 (b-file synthesized from sequence entry)
1 1
2 2
3 5
4 10
5 21
6 40
7 83
8 161
9 331
10 644
11 1102
12 3627
13 5646
14 10083
15 29188
16 53681
17 84121
18 237453
19 373114
20 1400757
21 2443494