n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 21 |
3 | 168 |
4 | 1865 |
5 | 26348 |
6 | 450205 |
7 | 9011152 |
8 | 206624529 |
9 | 5338349652 |
10 | 153408637349 |
11 | 4853054571896 |
12 | 167576795780953 |
13 | 6271355892192316 |
14 | 252836327218276653 |
15 | 10924378168890333600 |
16 | 503589353964709474337 |
17 | 24669610145575233317540 |
[1,4,21,168,1865,26348,450205,9011152,206624529, 5338349652,153408637349,4853054571896, 167576795780953,6271355892192316, 252836327218276653,10924378168890333600, 503589353964709474337,24669610145575233317540] |