n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 3 |
4 | 21 |
5 | 39 |
6 | 288 |
7 | 309 |
8 | 1659 |
9 | 3102 |
10 | 14148 |
11 | 17157 |
12 | 136227 |
13 | 130995 |
14 | 790128 |
15 | 1791489 |
16 | 5427597 |
17 | 8047839 |
18 | 64467180 |
19 | 64486017 |
20 | 437324331 |
21 | 871627041 |
22 | 3136899816 |
23 | 4278115101 |
24 | 35355632943 |
25 | 42359479638 |
[0,0,3,21,39,288,309,1659,3102,14148,17157,136227, 130995,790128,1791489,5427597,8047839,64467180, 64486017,437324331,871627041,3136899816, 4278115101,35355632943,42359479638] |