n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 34 |
3 | 278 |
4 | 1896 |
5 | 13074 |
6 | 92442 |
7 | 607200 |
8 | 3866890 |
9 | 24062327 |
10 | 146637082 |
11 | 873517399 |
12 | 5101981085 |
13 | 29274370913 |
14 | 165261721720 |
15 | 918756928198 |
16 | 5035250026792 |
17 | 27229238821726 |
18 | 145412875008092 |
19 | 767414597651951 |
20 | 4004930689994100 |
21 | 20679955170511834 |
22 | 105711772783426512 |
[1,1,34,278,1896,13074,92442,607200,3866890, 24062327,146637082,873517399,5101981085, 29274370913,165261721720,918756928198, 5035250026792,27229238821726,145412875008092, 767414597651951,4004930689994100, 20679955170511834,105711772783426512] |