# A340471 (b-file synthesized from sequence entry)
1 2
2 6
3 28
4 90
5 1488
6 945
7 182880
8 9450
9 8241408
10 93555
11 14856307200
12 638512875
13 1569400842240
14 18243225
15 5713142135500800
16 325641566250
17 1096948397364019200
18 38979295480125
19 6713362606110031872000
20 1531329465290625
21 408173030347971900211200
22 13447856940643125