# A189563 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 24
5 48
6 182
7 868
8 5752
9 37156
10 296944
11 2738820
12 28894206
13 335399468
14 4285522402
15 59536763892
16 892785282788