n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 25 |
4 | 265 |
5 | 3793 |
6 | 70789 |
7 | 1600429 |
8 | 42811078 |
9 | 1316981794 |
10 | 45858363502 |
11 | 1781106761686 |
12 | 76349861206627 |
13 | 3579325969675135 |
14 | 182170488961796899 |
15 | 10002072131444031160 |
16 | 589261706147357617009 |
17 | 37076870479319887575253 |
18 | 2481442922857293505594237 |
[1,4,25,265,3793,70789,1600429,42811078, 1316981794,45858363502,1781106761686, 76349861206627,3579325969675135, 182170488961796899,10002072131444031160, 589261706147357617009,37076870479319887575253, 2481442922857293505594237] |