n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 38 |
5 | 286 |
6 | 2756 |
7 | 32299 |
8 | 444998 |
9 | 7038898 |
10 | 125620652 |
11 | 2495811814 |
12 | 54618201884 |
13 | 1305184303996 |
14 | 33812846036552 |
15 | 943878836768947 |
16 | 28242424937855558 |
17 | 901709392642750186 |
18 | 30597227032818965276 |
19 | 1099566630423067201234 |
20 | 41718229482624755005748 |
[1,1,2,7,38,286,2756,32299,444998,7038898, 125620652,2495811814,54618201884,1305184303996, 33812846036552,943878836768947,28242424937855558, 901709392642750186,30597227032818965276, 1099566630423067201234,41718229482624755005748] |