n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 85 |
4 | 493 |
5 | 2871 |
6 | 16731 |
7 | 97513 |
8 | 568345 |
9 | 3312555 |
10 | 19306983 |
11 | 112529341 |
12 | 655869061 |
13 | 3822685023 |
14 | 22280241075 |
15 | 129858761425 |
16 | 756872327473 |
17 | 4411375203411 |
18 | 25711378892991 |
19 | 149856898154533 |
20 | 873430010034205 |
21 | 5090723162050695 |
22 | 29670908962269963 |
23 | 172934730611569081 |
[1,3,15,85,493,2871,16731,97513,568345,3312555, 19306983,112529341,655869061,3822685023, 22280241075,129858761425,756872327473, 4411375203411,25711378892991,149856898154533, 873430010034205,5090723162050695, 29670908962269963,172934730611569081] |