n | a(n) |
---|---|
1 | 1 |
2 | 21 |
3 | 78 |
4 | 274 |
5 | 1418 |
6 | 6573 |
7 | 29590 |
8 | 140427 |
9 | 665654 |
10 | 3151207 |
11 | 15051798 |
12 | 72121126 |
13 | 346235034 |
14 | 1666584401 |
15 | 8036053901 |
16 | 38798502247 |
17 | 187532267289 |
18 | 907211512520 |
19 | 4391645429788 |
20 | 21270391711148 |
21 | 103062868309303 |
22 | 499537429714748 |
[1,21,78,274,1418,6573,29590,140427,665654, 3151207,15051798,72121126,346235034,1666584401, 8036053901,38798502247,187532267289,907211512520, 4391645429788,21270391711148,103062868309303, 499537429714748] |