# A029584 (b-file synthesized from sequence entry)
0 2
1 1
2 0
3 2
4 6
5 16
6 60
7 272
8 1386
9 7936
10 50520
11 353792
12 2702766
13 22368256
14 199360980
15 1903757312
16 19391512146
17 209865342976
18 2404879675440
19 29088885112832
20 370371188237526
21 4951498053124096
22 69348874393137900