n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 5 |
6 | 21 |
7 | 109 |
8 | 2621 |
9 | 46409 |
10 | 1290665 |
11 | 143900249 |
12 | 10827502009 |
13 | 1650671059149 |
14 | 826986635160509 |
15 | 267834927512726725 |
16 | 226491424023176449909 |
17 | 497347467521206399078801 |
18 | 706331193237960728379843409 |
[1,1,1,1,5,21,109,2621,46409,1290665,143900249, 10827502009,1650671059149,826986635160509, 267834927512726725,226491424023176449909, 497347467521206399078801, 706331193237960728379843409] |