# A165541 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 22
5 89
6 379
7 1664
8 7460
9 33977
10 156727
11 730619
12 3436710
13 16291842
14 77758962
15 373369867
16 1802399037
17 8742691627
18 42590945206
19 208300979739
20 1022385319050
21 5034470059883
22 24865173540949
23 123147075005750