n | a(n) |
---|---|
3 | 1 |
4 | 2 |
5 | 8 |
6 | 32 |
7 | 141 |
8 | 672 |
9 | 3451 |
10 | 18962 |
11 | 110882 |
12 | 686866 |
13 | 4489422 |
14 | 30853656 |
15 | 222276063 |
16 | 1674067342 |
17 | 13149209956 |
18 | 107481488424 |
19 | 912490408782 |
20 | 8031867965568 |
21 | 73181346933680 |
22 | 689194657064660 |
23 | 6699707386510583 |
24 | 67143409071264516 |
25 | 692926011957479445 |
26 | 7356058078964945382 |
[1,2,8,32,141,672,3451,18962,110882,686866, 4489422,30853656,222276063,1674067342,13149209956, 107481488424,912490408782,8031867965568, 73181346933680,689194657064660,6699707386510583, 67143409071264516,692926011957479445, 7356058078964945382] |