# A308304 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 0
4 24
5 0
6 3396
7 0
8 1706112
9 0
10 2277172800
11 0
12 6690143635200
13 0
14 38006393154105600
15 0
16 380203596126189158400
17 0
18 6242084318591496668160000
19 0
20 159215887013285165806891008000