n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 2 |
3 | 20 |
4 | 542 |
5 | 8132 |
6 | 94502 |
7 | 964700 |
8 | 9138782 |
9 | 82619732 |
10 | 724180502 |
11 | 6213565580 |
12 | 52507598222 |
13 | 438786732932 |
14 | 3636161064902 |
15 | 29939329241660 |
16 | 245281233244862 |
17 | 2001531240407732 |
18 | 16280816416067702 |
19 | 132088684297864940 |
20 | 1069381010972414702 |
21 | 8642425579112444132 |
22 | 69743202133180068902 |
[1,2,2,20,542,8132,94502,964700,9138782,82619732, 724180502,6213565580,52507598222,438786732932, 3636161064902,29939329241660,245281233244862, 2001531240407732,16280816416067702, 132088684297864940,1069381010972414702, 8642425579112444132,69743202133180068902] |