n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 12 |
3 | 96 |
4 | 872 |
5 | 9960 |
6 | 138180 |
7 | 2298016 |
8 | 44686224 |
9 | 995739498 |
10 | 24993249820 |
11 | 697309946784 |
12 | 21396151468536 |
13 | 715827315312200 |
14 | 25926440773118340 |
15 | 1010478298772398080 |
16 | 42162515927954808352 |
17 | 1875027040759682964144 |
18 | 88527520717734462201756 |
19 | 4422273966757678408594560 |
[1,2,12,96,872,9960,138180,2298016,44686224, 995739498,24993249820,697309946784,21396151468536, 715827315312200,25926440773118340, 1010478298772398080,42162515927954808352, 1875027040759682964144,88527520717734462201756, 4422273966757678408594560] |