# A370876 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 12
4 120
5 1320
6 17640
7 304920
8 6249600
9 143579520
10 3711052800
11 107762054400
12 3455138332800
13 120802387305600
14 4583177081683200
15 187766031131078400
16 8256125218115174400
17 387662886088250572800
18 19364540503274942976000
19 1025507260911983244595200