# A360384 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 38880
9 323520
10 2953728
11 29666304
12 326584320
13 3919011840
14 50969640960
15 705722941440
16 10504707686400
17 167258901086208
18 2836455721721856
19 51038126752727040
20 971132188892405760