# A120414 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 6
4 18
5 45
6 102
7 213
8 426
9 821
10 1538
11 2820
12 5075
13 8996
14 15743
15 27247
16 46709
17 79405
18 133996
19 224640
20 374400