# A220881 (b-file synthesized from sequence entry)
4 1
5 1
6 4
7 12
8 43
9 143
10 504
11 1768
12 6310
13 22610
14 81752
15 297160
16 1086601
17 3991995
18 14732720
19 54587280
20 202997670
21 757398510
22 2834510744
23 10637507400
24 40023636310
25 150946230006
26 570534578704
27 2160865067312
28 8199711378716
29 31170212479588
30 118686578956272