n | a(n) |
---|---|
1 | 4 |
2 | 36 |
3 | 236 |
4 | 1528 |
5 | 9858 |
6 | 63592 |
7 | 410218 |
8 | 2646208 |
9 | 17069998 |
10 | 110114102 |
11 | 710317326 |
12 | 4582071648 |
13 | 29557748082 |
14 | 190669317026 |
15 | 1229957991200 |
16 | 7934137929012 |
17 | 51181052626992 |
18 | 330155610028966 |
19 | 2129747655406998 |
20 | 13738446168804038 |
[4,36,236,1528,9858,63592,410218,2646208,17069998, 110114102,710317326,4582071648,29557748082, 190669317026,1229957991200,7934137929012, 51181052626992,330155610028966,2129747655406998, 13738446168804038] |