n | a(n) |
---|---|
2 | 5 |
3 | 15 |
4 | 35 |
5 | 115 |
6 | 365 |
7 | 3215 |
8 | 32150 |
9 | 321500 |
10 | 3215000 |
11 | 32150000 |
12 | 321500000 |
13 | 3215000000 |
14 | 32150000000 |
15 | 321500000000 |
16 | 3215000000000 |
17 | 32150000000000 |
18 | 321500000000000 |
19 | 3215000000000000 |
20 | 32150000000000000 |
21 | 321500000000000000 |
[5,15,35,115,365,3215,32150,321500,3215000, 32150000,321500000,3215000000,32150000000, 321500000000,3215000000000,32150000000000, 321500000000000,3215000000000000, 32150000000000000,321500000000000000] |