# A002936 (b-file synthesized from sequence entry)
1 1
2 3
3 7
4 16
5 33
6 71
7 141
8 284
9 552
10 1067
11 2020
12 3803
13 7043
14 12957
15 23566
16 42536
17 76068
18 135093
19 238001
20 416591