# A325948 (b-file synthesized from sequence entry)
0 1
1 2
2 22
3 116
4 806
5 4028
6 26876
7 132776
8 808710
9 4170604
10 23586836
11 120316888
12 673359196
13 3383189976
14 18228019512
15 92654842960
16 486382544838
17 2443171359820
18 12694346947492
19 63262412763896
20 323739858349684
21 1609270321201800
22 8117702067063368
23 40102791350319408