# A357392 (b-file synthesized from sequence entry)
0 0
1 1
2 5
3 56
4 990
5 24024
6 742560
7 27907200
8 1235591280
9 62990928000
10 3634245014400
11 234102016512000
12 16654322805120000
13 1296884927852236800
14 109720581991308288000
15 10021650950985427353600
16 982869376029609100032000
17 103017324974226408345600000