# A187657 (b-file synthesized from sequence entry)
0 1
1 2
2 16
3 222
4 4416
5 114660
6 3676814
7 140408338
8 6222858240
9 314006546124
10 17774855765140
11 1115507717954432
12 76871991664546170
13 5770732305836768712
14 468750121409142448386
15 40964179307489016777630
16 3832326196169482368117760