# A210097 (b-file synthesized from sequence entry)
0 1
1 2
2 14
3 180
4 3464
5 90018
6 2968968
7 119252060
8 5664108920
9 311212995732
10 19447137310280
11 1363465685120296
12 106080538006819320
13 9075286815352325570
14 847179165282912257160
15 85729124193701299050252
16 9351018056855217246637304
17 1094013446495887840421430300