n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 3 |
7 | 14 |
8 | 78 |
9 | 497 |
10 | 3628 |
11 | 29990 |
12 | 277200 |
13 | 2834328 |
14 | 31770514 |
15 | 387459072 |
16 | 5108103000 |
17 | 72397196844 |
18 | 1097800704000 |
19 | 17735107218083 |
20 | 304112751022080 |
21 | 5516784599040000 |
22 | 105559797875432727 |
23 | 2124765080865042873 |
24 | 44881973505008640000 |
25 | 992717442773183102976 |
[1,0,0,0,0,3,14,78,497,3628,29990,277200,2834328, 31770514,387459072,5108103000,72397196844, 1097800704000,17735107218083,304112751022080, 5516784599040000,105559797875432727, 2124765080865042873,44881973505008640000, 992717442773183102976] |