# A228513 (b-file synthesized from sequence entry)
0 1
1 3
2 16
3 152
4 2448
5 61232
6 2204416
7 108016512
8 6913057024
9 559957619456
10 55995761946624
11 6775487195543552
12 975670156158275584
13 164888256390748581888
14 32318098252586722066432
15 7271572106832012464979968
16 1861522459348995191034937344
17 537979990751859610209097023488