n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 6 |
8 | 63 |
9 | 616 |
10 | 6678 |
11 | 77868 |
12 | 978978 |
13 | 13216104 |
14 | 190899423 |
15 | 2939850914 |
16 | 48106651593 |
17 | 833848627248 |
18 | 15265844099324 |
19 | 294412707629208 |
20 | 5966764207952724 |
21 | 126793739418994416 |
22 | 2819296088257641741 |
23 | 65470320271760790078 |
[0,0,0,0,0,1,6,63,616,6678,77868,978978,13216104, 190899423,2939850914,48106651593,833848627248, 15265844099324,294412707629208,5966764207952724, 126793739418994416,2819296088257641741, 65470320271760790078] |