n | a(n) |
---|---|
1 | 6 |
2 | 52 |
3 | 360 |
4 | 2576 |
5 | 18336 |
6 | 130624 |
7 | 930432 |
8 | 6627584 |
9 | 47208960 |
10 | 336274432 |
11 | 2395318272 |
12 | 17062105088 |
13 | 121535176704 |
14 | 865707900928 |
15 | 6166528819200 |
16 | 43924836122624 |
17 | 312881247289344 |
18 | 2228686172717056 |
19 | 15875167014617088 |
20 | 113080491469438976 |
[6,52,360,2576,18336,130624,930432,6627584, 47208960,336274432,2395318272,17062105088, 121535176704,865707900928,6166528819200, 43924836122624,312881247289344,2228686172717056, 15875167014617088,113080491469438976] |