# A220232 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 6
4 12
5 80
6 390
7 2352
8 15176
9 106416
10 801450
11 6446000
12 55056012
13 497109912
14 4726554014
15 47164460280
16 492470203920
17 5366715030752
18 60896862950994
19 718023996605664
20 8780720796483860
21 111182108454527880
22 1455411630641384262
23 19668592336395304808