n | a(n) |
---|---|
0 | 1 |
1 | 760 |
2 | 77560 |
3 | 2508000 |
4 | 34729720 |
5 | 259114704 |
6 | 1327461600 |
7 | 5341699520 |
8 | 17701924600 |
9 | 51294999960 |
10 | 131880275664 |
11 | 312126610080 |
12 | 680432137440 |
13 | 1404010658960 |
14 | 2724593155520 |
15 | 5089580732736 |
16 | 9062110326520 |
17 | 15699349246320 |
18 | 26159307313560 |
19 | 42719885410400 |
20 | 67517852274384 |
[1,760,77560,2508000,34729720,259114704, 1327461600,5341699520,17701924600,51294999960, 131880275664,312126610080,680432137440, 1404010658960,2724593155520,5089580732736, 9062110326520,15699349246320,26159307313560, 42719885410400,67517852274384] |