n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 55 |
4 | 351 |
5 | 2401 |
6 | 17248 |
7 | 128221 |
8 | 978082 |
9 | 7612155 |
10 | 60204488 |
11 | 482481220 |
12 | 3909460725 |
13 | 31974923487 |
14 | 263623879118 |
15 | 2188682538746 |
16 | 18282238300443 |
17 | 153537981720402 |
18 | 1295640515428649 |
19 | 10980400434511117 |
20 | 93418283866708579 |
[1,2,10,55,351,2401,17248,128221,978082,7612155, 60204488,482481220,3909460725,31974923487, 263623879118,2188682538746,18282238300443, 153537981720402,1295640515428649, 10980400434511117,93418283866708579] |