n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 9 |
4 | 44 |
5 | 96 |
6 | 312 |
7 | 2139 |
8 | 4421 |
9 | 48234 |
10 | 623336 |
11 | 1266781 |
12 | 3897787 |
13 | 20138571 |
14 | 341171088 |
15 | 6464294306 |
16 | 148397712765 |
17 | 299150944780 |
18 | 8665061848812 |
19 | 268337399189042 |
20 | 1911903969221925 |
21 | 5783509506896323 |
22 | 213833540687410017 |
[1,4,9,44,96,312,2139,4421,48234,623336,1266781, 3897787,20138571,341171088,6464294306, 148397712765,299150944780,8665061848812, 268337399189042,1911903969221925,5783509506896323, 213833540687410017] |