n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 28 |
4 | 225 |
5 | 2206 |
6 | 26174 |
7 | 361278 |
8 | 5704401 |
9 | 101297701 |
10 | 1998893240 |
11 | 43386854622 |
12 | 1027353587730 |
13 | 26353742447280 |
14 | 728030940612638 |
15 | 21548668265211778 |
16 | 680330296613877761 |
17 | 22821706122361385354 |
18 | 810587673640374442445 |
19 | 30390159250481750866640 |
[1,1,5,28,225,2206,26174,361278,5704401,101297701, 1998893240,43386854622,1027353587730, 26353742447280,728030940612638,21548668265211778, 680330296613877761,22821706122361385354, 810587673640374442445,30390159250481750866640] |