n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 31 |
3 | 361 |
4 | 5605 |
5 | 108781 |
6 | 2533447 |
7 | 68836279 |
8 | 2137543177 |
9 | 74673228457 |
10 | 2898494302651 |
11 | 123757822391083 |
12 | 5764497138070381 |
13 | 290878956151681405 |
14 | 15806942065094830735 |
15 | 920336494043393536591 |
16 | 57157621592164505969425 |
17 | 3771643127452655490322513 |
[1,4,31,361,5605,108781,2533447,68836279, 2137543177,74673228457,2898494302651, 123757822391083,5764497138070381, 290878956151681405,15806942065094830735, 920336494043393536591,57157621592164505969425, 3771643127452655490322513] |