# A191368 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 12
4 12
5 -120
6 -600
7 6720
8 84672
9 -1088640
10 -27216000
11 399168000
12 17337576960
13 -286858091520
14 -19833061248000
15 366148823040000
16 37838865512448000
17 -771912856453939200
18 -113678565831806976000
19 2541050295063920640000
20 513635665355584192512000