n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 16 |
4 | 120 |
5 | 1170 |
6 | 14070 |
7 | 201600 |
8 | 3356640 |
9 | 63730800 |
10 | 1359666000 |
11 | 32212857600 |
12 | 839350512000 |
13 | 23860289653200 |
14 | 734964075846000 |
15 | 24388126963200000 |
16 | 867393811956672000 |
17 | 32919980214689568000 |
[1,1,3,16,120,1170,14070,201600,3356640,63730800, 1359666000,32212857600,839350512000, 23860289653200,734964075846000,24388126963200000, 867393811956672000,32919980214689568000] |