n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 7 |
4 | 9 |
5 | 31 |
6 | 223 |
7 | 442 |
8 | 1529 |
9 | 6559 |
10 | 66111 |
11 | 159952 |
12 | 742503 |
13 | 3047656 |
14 | 19094286 |
15 | 245173117 |
16 | 761328969 |
17 | 3935539271 |
18 | 20213664703 |
19 | 117323673136 |
20 | 897132508439 |
21 | 15791065424134 |
22 | 56649181720176 |
23 | 353387529508691 |
24 | 1955231849465423 |
[1,1,7,9,31,223,442,1529,6559,66111,159952,742503, 3047656,19094286,245173117,761328969,3935539271, 20213664703,117323673136,897132508439, 15791065424134,56649181720176,353387529508691, 1955231849465423] |