n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 15 |
6 | 52 |
7 | 202 |
8 | 861 |
9 | 3972 |
10 | 19648 |
11 | 103500 |
12 | 577443 |
13 | 3396804 |
14 | 20988116 |
15 | 135770140 |
16 | 916936351 |
17 | 6449233093 |
18 | 47137434787 |
19 | 357331341987 |
20 | 2804582808108 |
21 | 22754919576652 |
22 | 190578011064394 |
23 | 1645490708244886 |
24 | 14629351150837605 |
[1,1,2,5,15,52,202,861,3972,19648,103500,577443, 3396804,20988116,135770140,916936351,6449233093, 47137434787,357331341987,2804582808108, 22754919576652,190578011064394,1645490708244886, 14629351150837605] |