n | a(n) |
---|---|
0 | 0 |
1 | 3 |
2 | 12 |
3 | 18 |
4 | 72 |
5 | 360 |
6 | 2160 |
7 | 15120 |
8 | 120960 |
9 | 1088640 |
10 | 10886400 |
11 | 119750400 |
12 | 1437004800 |
13 | 18681062400 |
14 | 261534873600 |
15 | 3923023104000 |
16 | 62768369664000 |
17 | 1067062284288000 |
18 | 19207121117184000 |
19 | 364935301226496000 |
[0,3,12,18,72,360,2160,15120,120960,1088640, 10886400,119750400,1437004800,18681062400, 261534873600,3923023104000,62768369664000, 1067062284288000,19207121117184000, 364935301226496000] |