n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 22 |
3 | 168 |
4 | 1700 |
5 | 21560 |
6 | 328576 |
7 | 5844608 |
8 | 118827264 |
9 | 2717955776 |
10 | 69076424384 |
11 | 1931128212992 |
12 | 58895387322240 |
13 | 1945869352171264 |
14 | 69235812945551872 |
15 | 2639436090012161024 |
16 | 107329778640349652992 |
17 | 4637225944423696109568 |
18 | 212138681191492565180416 |
[1,4,22,168,1700,21560,328576,5844608,118827264, 2717955776,69076424384,1931128212992, 58895387322240,1945869352171264,69235812945551872, 2639436090012161024,107329778640349652992, 4637225944423696109568,212138681191492565180416] |