# A288817 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 3
4 6
5 20
6 67
7 291
8 1099
9 5780
10 26249
11 153238
12 832366
13 5443440
14 32738738
15 239515824
16 1591963864
17 12548347149
18 93066370414