n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 45 |
3 | 378 |
4 | 3402 |
5 | 32076 |
6 | 312741 |
7 | 3127410 |
8 | 31899582 |
9 | 330595668 |
10 | 3471254514 |
11 | 36848701764 |
12 | 394807518900 |
13 | 4263921204120 |
14 | 46370143094805 |
15 | 507343918566690 |
16 | 5580783104233590 |
17 | 61682339573108100 |
18 | 684673969261499910 |
19 | 7629224228913856140 |
20 | 85308598196036755020 |
[1,6,45,378,3402,32076,312741,3127410,31899582, 330595668,3471254514,36848701764,394807518900, 4263921204120,46370143094805,507343918566690, 5580783104233590,61682339573108100, 684673969261499910,7629224228913856140, 85308598196036755020] |