n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 1 |
8 | 3 |
9 | 9 |
10 | 19 |
11 | 33 |
12 | 73 |
13 | 235 |
14 | 975 |
15 | 4059 |
16 | 17677 |
17 | 73575 |
18 | 388495 |
19 | 2342809 |
20 | 17238179 |
21 | 130497747 |
22 | 1139591877 |
23 | 10255691217 |
24 | 112977046301 |
[1,1,1,1,1,1,1,3,9,19,33,73,235,975,4059,17677, 73575,388495,2342809,17238179,130497747, 1139591877,10255691217,112977046301] |