n | a(n) |
---|---|
0 | 1 |
1 | 27 |
2 | 378 |
3 | 3681 |
4 | 28134 |
5 | 180144 |
6 | 1005957 |
7 | 5032422 |
8 | 22986801 |
9 | 97229361 |
10 | 384953553 |
11 | 1438738443 |
12 | 5110502256 |
13 | 17348445108 |
14 | 56541857409 |
15 | 177611637141 |
16 | 539501563962 |
17 | 1589134470966 |
18 | 4550281700055 |
19 | 12692702415312 |
20 | 34556103662778 |
21 | 91975719684573 |
22 | 239686155975618 |
[1,27,378,3681,28134,180144,1005957,5032422, 22986801,97229361,384953553,1438738443,5110502256, 17348445108,56541857409,177611637141,539501563962, 1589134470966,4550281700055,12692702415312, 34556103662778,91975719684573,239686155975618] |