n | a(n) |
---|---|
1 | 0 |
2 | 12 |
3 | 480 |
4 | 4488 |
5 | 22278 |
6 | 78288 |
7 | 220374 |
8 | 531594 |
9 | 1143648 |
10 | 2254440 |
11 | 4145244 |
12 | 7202190 |
13 | 11940444 |
14 | 19029300 |
15 | 29318754 |
16 | 43872402 |
17 | 63999528 |
18 | 91288794 |
19 | 127642164 |
20 | 175326336 |
21 | 237000816 |
22 | 315772032 |
[0,12,480,4488,22278,78288,220374,531594,1143648, 2254440,4145244,7202190,11940444,19029300, 29318754,43872402,63999528,91288794,127642164, 175326336,237000816,315772032] |