# A207969 (b-file synthesized from sequence entry)
0 1
1 5
2 15
3 60
4 295
5 1625
6 9430
7 56465
8 345010
9 2139595
10 13419500
11 84926105
12 541398665
13 3472389210
14 22385362895
15 144945232375
16 942089445030
17 6143582084115
18 40181143112035
19 263482860974570
20 1731780213622125
21 11406235045261205
22 75268685723935940