n | a(n) |
---|---|
1 | 2 |
2 | 14 |
3 | 72 |
4 | 343 |
5 | 1920 |
6 | 11444 |
7 | 68112 |
8 | 405019 |
9 | 2422502 |
10 | 14527358 |
11 | 87130296 |
12 | 522558079 |
13 | 3134839248 |
14 | 18808467356 |
15 | 112848487824 |
16 | 677075548723 |
17 | 4062417593558 |
18 | 24374464952438 |
19 | 146246626666296 |
20 | 877478675492551 |
21 | 5264869525163232 |
[2,14,72,343,1920,11444,68112,405019,2422502, 14527358,87130296,522558079,3134839248, 18808467356,112848487824,677075548723, 4062417593558,24374464952438,146246626666296, 877478675492551,5264869525163232] |