n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 243 |
4 | 3936 |
5 | 20860 |
6 | 72315 |
7 | 197421 |
8 | 460768 |
9 | 961416 |
10 | 1843245 |
11 | 3306655 |
12 | 5621616 |
13 | 9142068 |
14 | 14321671 |
15 | 21730905 |
16 | 32075520 |
17 | 46216336 |
18 | 65190393 |
19 | 90233451 |
20 | 122803840 |
21 | 164607660 |
22 | 217625331 |
23 | 284139493 |
24 | 366764256 |
25 | 468475800 |
26 | 592644325 |
27 | 743067351 |
28 | 924004368 |
[0,1,243,3936,20860,72315,197421,460768,961416, 1843245,3306655,5621616,9142068,14321671,21730905, 32075520,46216336,65190393,90233451,122803840, 164607660,217625331,284139493,366764256,468475800, 592644325,743067351,924004368] |