n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 26 |
5 | 134 |
6 | 804 |
7 | 5632 |
8 | 45058 |
9 | 405525 |
10 | 4055253 |
11 | 44607785 |
12 | 535293421 |
13 | 6958814485 |
14 | 97423402796 |
15 | 1461351041944 |
16 | 23381616671119 |
17 | 397487483409030 |
18 | 7154774701362549 |
19 | 135940719325888433 |
20 | 2718814386517768672 |
[1,2,6,26,134,804,5632,45058,405525,4055253, 44607785,535293421,6958814485,97423402796, 1461351041944,23381616671119,397487483409030, 7154774701362549,135940719325888433, 2718814386517768672] |