n | a(n) |
---|---|
1 | 0 |
2 | 5 |
3 | 18 |
4 | 94 |
5 | 472 |
6 | 2519 |
7 | 13694 |
8 | 76251 |
9 | 431488 |
10 | 2477726 |
11 | 14399942 |
12 | 84570550 |
13 | 501197804 |
14 | 2994043007 |
15 | 18012040166 |
16 | 109041492241 |
17 | 663838548026 |
18 | 4061954970953 |
19 | 24969125105686 |
20 | 154130498547414 |
21 | 955070091156516 |
[0,5,18,94,472,2519,13694,76251,431488,2477726, 14399942,84570550,501197804,2994043007, 18012040166,109041492241,663838548026, 4061954970953,24969125105686,154130498547414, 955070091156516] |