n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 30 |
3 | 215 |
4 | 1729 |
5 | 15176 |
6 | 143814 |
7 | 1462995 |
8 | 15876410 |
9 | 182811992 |
10 | 2223580281 |
11 | 28458251185 |
12 | 381943459065 |
13 | 5359649816728 |
14 | 78430018675440 |
15 | 1194057733357517 |
16 | 18873870914263424 |
17 | 309154787519651284 |
18 | 5238840625331179517 |
[1,4,30,215,1729,15176,143814,1462995,15876410, 182811992,2223580281,28458251185,381943459065, 5359649816728,78430018675440,1194057733357517, 18873870914263424,309154787519651284, 5238840625331179517] |