n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 3 |
4 | 21 |
5 | 39 |
6 | 285 |
7 | 309 |
8 | 1638 |
9 | 3099 |
10 | 14109 |
11 | 17157 |
12 | 135918 |
13 | 130995 |
14 | 789819 |
15 | 1791447 |
16 | 5425938 |
17 | 8047839 |
18 | 64463793 |
19 | 64486017 |
20 | 437310162 |
21 | 871626729 |
22 | 3136882659 |
23 | 4278115101 |
24 | 35355495078 |
25 | 42359479599 |
[0,0,3,21,39,285,309,1638,3099,14109,17157,135918, 130995,789819,1791447,5425938,8047839,64463793, 64486017,437310162,871626729,3136882659, 4278115101,35355495078,42359479599] |