n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 27 |
4 | 428 |
5 | 1375 |
6 | 15797 |
7 | 211631 |
8 | 86540 |
9 | 1496205 |
10 | 144045379 |
11 | 145607407 |
12 | 3378951221 |
13 | 17021747431 |
14 | 51392118293 |
15 | 214084856611 |
16 | 13337033800292 |
17 | 13393340889767 |
18 | 94103945740529 |
19 | 3493457389196573 |
20 | 3503912518228613 |
[0,4,27,428,1375,15797,211631,86540,1496205, 144045379,145607407,3378951221,17021747431, 51392118293,214084856611,13337033800292, 13393340889767,94103945740529,3493457389196573, 3503912518228613] |