n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 15 |
5 | 35 |
6 | 77 |
7 | 1463 |
8 | 1309 |
9 | 1001 |
10 | 4147 |
11 | 2093 |
12 | 19019 |
13 | 17017 |
14 | 39767 |
15 | 35581 |
16 | 323323 |
17 | 10023013 |
18 | 1339481 |
19 | 676039 |
20 | 20957209 |
21 | 2800733 |
22 | 86822723 |
[1,2,3,15,35,77,1463,1309,1001,4147,2093,19019, 17017,39767,35581,323323,10023013,1339481,676039, 20957209,2800733,86822723] |