n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 9 |
4 | 49 |
5 | 295 |
6 | 1893 |
7 | 12697 |
8 | 87985 |
9 | 625050 |
10 | 4527978 |
11 | 33321906 |
12 | 248416364 |
13 | 1872145027 |
14 | 14239620722 |
15 | 109168322844 |
16 | 842720914576 |
17 | 6544740855880 |
18 | 51099789487093 |
19 | 400875949972026 |
20 | 3158281869743276 |
21 | 24978090277139632 |
22 | 198234044661303243 |
23 | 1578237110356269055 |
24 | 12601524223155447189 |
[1,2,9,49,295,1893,12697,87985,625050,4527978, 33321906,248416364,1872145027,14239620722, 109168322844,842720914576,6544740855880, 51099789487093,400875949972026,3158281869743276, 24978090277139632,198234044661303243, 1578237110356269055,12601524223155447189] |