# A146717 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 5
7 17
8 39
9 155
10 745
11 4705
12 39573
13 369483
14 3970963
15 54943873
16 950039207
17 20417177215
18 545483266919
19 17663079620537
20 695250063366563
21 33778790635375371