# A170809 (b-file synthesized from sequence entry)
1 1
2 2
3 4
4 12
5 40
6 116
7 200
8 444
9 864
10 3368
11 10936
12 38320
13 139848
14 534828
15 2230464
16 9802612
17 46188544
18 231210272
19 1213437504
20 6717614708
21 39002297800