# A248812 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 2
4 24
5 24
6 720
7 720
8 40320
9 40320
10 3628800
11 3628800
12 479001600
13 479001600
14 87178291200
15 87178291200
16 20922789888000
17 20922789888000
18 6402373705728000
19 6402373705728000
20 2432902008176640000
21 2432902008176640000
22 1124000727777607680000