# A146688 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 15
9 35
10 63
11 133
12 361
13 1225
14 3603
15 14173
16 68577
17 327107
18 1804859
19 9535581
20 56798795
21 377223653