n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 19 |
4 | 133 |
5 | 1123 |
6 | 12085 |
7 | 151765 |
8 | 2236876 |
9 | 37373866 |
10 | 702393424 |
11 | 14611910794 |
12 | 333811635793 |
13 | 8298224157103 |
14 | 223061783080075 |
15 | 6444694333816630 |
16 | 199168434836797921 |
17 | 6555131451981351961 |
18 | 228906927287899911709 |
[1,4,19,133,1123,12085,151765,2236876,37373866, 702393424,14611910794,333811635793,8298224157103, 223061783080075,6444694333816630, 199168434836797921,6555131451981351961, 228906927287899911709] |