# A181037 (b-file synthesized from sequence entry)
1 1
2 3
3 6
4 18
5 41
6 112
7 269
8 703
9 1729
10 4427
11 11010
12 27923
13 69819
14 176278
15 441932
16 1113390
17 2794963
18 7034179
19 17669820
20 44447034
21 111689337