# A380271 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 24
5 120
6 720
7 1008
8 40320
9 72576
10 3628800
11 39916800
12 95800320
13 6227020800
14 3487131648
15 1307674368000
16 20922789888000
17 2845499424768
18 6402373705728000
19 24329020081766400
20 187146308321280000
21 51090942171709440000
22 224800145555521536000
23 25852016738884976640000