n | a(n) |
---|---|
9 | 0 |
10 | 1 |
11 | 55 |
12 | 1505 |
13 | 29324 |
14 | 470327 |
15 | 6695470 |
16 | 88385973 |
17 | 1111798442 |
18 | 13564841773 |
19 | 162467818939 |
20 | 1926323411088 |
21 | 22746380908378 |
22 | 268674567620291 |
23 | 3184862187668777 |
24 | 37981401796219812 |
25 | 456537084216273054 |
26 | 5538881542974933954 |
27 | 67901571491109849536 |
28 | 841799517686212572527 |
[0,1,55,1505,29324,470327,6695470,88385973, 1111798442,13564841773,162467818939,1926323411088, 22746380908378,268674567620291,3184862187668777, 37981401796219812,456537084216273054, 5538881542974933954,67901571491109849536, 841799517686212572527] |