# A112356 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 1
4 6
5 4
6 1
7 24
8 210
9 8
10 1
11 120
12 332640
13 32760
14 16
15 1
16 720
17 29059430400
18 19275223968000
19 20389320
20 32
21 1
22 5040
23 223016017416192000
24 1250004633476421848894668800000
25 28844656968251942737920000
26 48920775120
27 64