n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 9 |
4 | 28 |
5 | 125 |
6 | 486 |
7 | 2317 |
8 | 10424 |
9 | 53433 |
10 | 267850 |
11 | 1470161 |
12 | 8032212 |
13 | 46925749 |
14 | 275437358 |
15 | 1702883925 |
16 | 10630404976 |
17 | 69192858737 |
18 | 455957606034 |
19 | 3110617216153 |
20 | 21512638153100 |
21 | 153234193139181 |
22 | 1107087138215542 |
23 | 8206182165264029 |
24 | 61703155328534568 |
[0,1,2,9,28,125,486,2317,10424,53433,267850, 1470161,8032212,46925749,275437358,1702883925, 10630404976,69192858737,455957606034, 3110617216153,21512638153100,153234193139181, 1107087138215542,8206182165264029, 61703155328534568] |