n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 40 |
3 | 544 |
4 | 8320 |
5 | 131584 |
6 | 2099200 |
7 | 33562624 |
8 | 536903680 |
9 | 8590065664 |
10 | 137439477760 |
11 | 2199025352704 |
12 | 35184380477440 |
13 | 562949986975744 |
14 | 9007199388958720 |
15 | 144115188612726784 |
16 | 2305843011361177600 |
[1,4,40,544,8320,131584,2099200,33562624, 536903680,8590065664,137439477760,2199025352704, 35184380477440,562949986975744,9007199388958720, 144115188612726784,2305843011361177600] |