# A146472 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 3
6 9
7 23
8 85
9 375
10 2149
11 15299
12 129877
13 1353943
14 17475557
15 279267939
16 5511590965
17 133957241929
18 4003924495735
19 147542199515841
20 6704016396279819
21 375798793326385295
22 25965634034447375655