n | a(n) |
---|---|
0 | 3 |
1 | 4 |
2 | 14 |
3 | 72 |
4 | 462 |
5 | 3432 |
6 | 28314 |
7 | 252824 |
8 | 2401828 |
9 | 23984688 |
10 | 249554968 |
11 | 2687515040 |
12 | 29802622140 |
13 | 338931781200 |
14 | 3940081956450 |
15 | 46695460462200 |
16 | 562939717794300 |
17 | 6890720756158800 |
18 | 85507580292334200 |
19 | 1074244300649863200 |
20 | 13647785546892580200 |
21 | 175166360584464768480 |
[3,4,14,72,462,3432,28314,252824,2401828,23984688, 249554968,2687515040,29802622140,338931781200, 3940081956450,46695460462200,562939717794300, 6890720756158800,85507580292334200, 1074244300649863200,13647785546892580200, 175166360584464768480] |