n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 27 |
3 | 321 |
4 | 4257 |
5 | 61155 |
6 | 924543 |
7 | 14492790 |
8 | 233421669 |
9 | 3839329521 |
10 | 64218149487 |
11 | 1088970739038 |
12 | 18678139900776 |
13 | 323477653749255 |
14 | 5648683685011425 |
15 | 99348712270884792 |
16 | 1758325597698951072 |
17 | 31292300465578800315 |
18 | 559640987226716260068 |
19 | 10052876829984340893552 |
20 | 181296262179794893505427 |
[1,3,27,321,4257,61155,924543,14492790,233421669, 3839329521,64218149487,1088970739038, 18678139900776,323477653749255,5648683685011425, 99348712270884792,1758325597698951072, 31292300465578800315,559640987226716260068, 10052876829984340893552,181296262179794893505427] |