n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 42 |
3 | 330 |
4 | 2814 |
5 | 25422 |
6 | 239442 |
7 | 2326434 |
8 | 23151030 |
9 | 234784662 |
10 | 2417832186 |
11 | 25216231866 |
12 | 265796560302 |
13 | 2827138163550 |
14 | 30306009654690 |
15 | 327081253546770 |
16 | 3551148743559270 |
17 | 38758882760119590 |
18 | 425024567305557450 |
[1,6,42,330,2814,25422,239442,2326434,23151030, 234784662,2417832186,25216231866,265796560302, 2827138163550,30306009654690,327081253546770, 3551148743559270,38758882760119590, 425024567305557450] |