n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 25 |
6 | 104 |
7 | 450 |
8 | 1935 |
9 | 8666 |
10 | 39050 |
11 | 177784 |
12 | 814006 |
13 | 3756250 |
14 | 17437275 |
15 | 81380200 |
16 | 381468750 |
17 | 1795156250 |
18 | 8477078967 |
19 | 40154687500 |
20 | 190734843750 |
21 | 908261625600 |
22 | 4334883611534 |
23 | 20732050781250 |
24 | 99341072183730 |
25 | 476837158203125 |
26 | 2292486335637500 |
[1,1,2,5,25,104,450,1935,8666,39050,177784,814006, 3756250,17437275,81380200,381468750,1795156250, 8477078967,40154687500,190734843750,908261625600, 4334883611534,20732050781250,99341072183730, 476837158203125,2292486335637500] |