n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 80 |
3 | 1215 |
4 | 8704 |
5 | 40625 |
6 | 143856 |
7 | 420175 |
8 | 1064960 |
9 | 2421009 |
10 | 5050000 |
11 | 9824111 |
12 | 18040320 |
13 | 31559905 |
14 | 52975664 |
15 | 85809375 |
16 | 134742016 |
17 | 205879265 |
18 | 307054800 |
19 | 448173919 |
20 | 641600000 |
21 | 902586321 |
22 | 1249755760 |
23 | 1705630895 |
24 | 2297217024 |
[0,1,80,1215,8704,40625,143856,420175,1064960, 2421009,5050000,9824111,18040320,31559905, 52975664,85809375,134742016,205879265,307054800, 448173919,641600000,902586321,1249755760, 1705630895,2297217024] |