n | a(n) |
---|---|
0 | 1 |
1 | 21 |
2 | 315 |
3 | 4185 |
4 | 52731 |
5 | 648081 |
6 | 7869555 |
7 | 94992345 |
8 | 1143260811 |
9 | 13739265441 |
10 | 164992058595 |
11 | 1980630120105 |
12 | 23771914474491 |
13 | 285289093487601 |
14 | 3423625845396435 |
15 | 41084450500377465 |
16 | 493019048181297771 |
[1,21,315,4185,52731,648081,7869555,94992345, 1143260811,13739265441,164992058595,1980630120105, 23771914474491,285289093487601,3423625845396435, 41084450500377465,493019048181297771] |