# A370931 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 30
4 340
5 5180
6 99360
7 2300830
8 62473600
9 1946941920
10 68507714800
11 2686816932800
12 116225776497600
13 5497681373384200
14 282305750023897600
15 15640212734095950000
16 929908726447266966400
17 59061538103044360083200
18 3990922849835432102592000