n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 19 |
3 | 100 |
4 | 553 |
5 | 3124 |
6 | 17803 |
7 | 101812 |
8 | 583057 |
9 | 3340900 |
10 | 19147459 |
11 | 109747972 |
12 | 629066809 |
13 | 3605810836 |
14 | 20668618171 |
15 | 118473404500 |
16 | 679095199777 |
17 | 3892607339716 |
18 | 22312621120627 |
19 | 127897073548708 |
20 | 733112513821513 |
[1,4,19,100,553,3124,17803,101812,583057,3340900, 19147459,109747972,629066809,3605810836, 20668618171,118473404500,679095199777, 3892607339716,22312621120627,127897073548708, 733112513821513] |