n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 56 |
5 | 541 |
6 | 5312 |
7 | 57667 |
8 | 742016 |
9 | 11113081 |
10 | 184604672 |
11 | 3330446527 |
12 | 65282226176 |
13 | 1390635884821 |
14 | 31985367007232 |
15 | 788073542654587 |
16 | 20690414547009536 |
17 | 576994154691083761 |
18 | 17041602531260628992 |
19 | 531396143657913225847 |
20 | 17441890388860556804096 |
[1,1,2,7,56,541,5312,57667,742016,11113081, 184604672,3330446527,65282226176,1390635884821, 31985367007232,788073542654587,20690414547009536, 576994154691083761,17041602531260628992, 531396143657913225847,17441890388860556804096] |