n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | 12 |
4 | 49 |
5 | 247 |
6 | 1482 |
7 | 10377 |
8 | 83019 |
9 | 747171 |
10 | 7471712 |
11 | 82188838 |
12 | 986266063 |
13 | 12821458831 |
14 | 179500423635 |
15 | 2692506354539 |
16 | 43080101672631 |
17 | 732361728434739 |
18 | 13182511111825302 |
19 | 250467711124680749 |
20 | 5009354222493614990 |
[2,4,12,49,247,1482,10377,83019,747171,7471712, 82188838,986266063,12821458831,179500423635, 2692506354539,43080101672631,732361728434739, 13182511111825302,250467711124680749, 5009354222493614990] |