# A026881 (b-file synthesized from sequence entry)
4 1
5 18
6 199
7 1756
8 13624
9 97434
10 659549
11 4294814
12 27187126
13 168499288
14 1027595830
15 6188801692
16 36907274904
17 218380550880
18 1284054213847
19 7511758730412
20 43762192338180
21 254086749470802
22 1471134871883972