# A218212 (b-file synthesized from sequence entry)
1 0
2 0
3 4
4 14
5 29
6 78
7 225
8 632
9 1716
10 4726
11 13482
12 38627
13 112051
14 327426
15 959254
16 2829346
17 8391477
18 24975616
19 74606489
20 223523560
21 671611810