n | a(n) |
---|---|
1 | 1 |
2 | 9 |
3 | 28 |
4 | 129 |
5 | 126 |
6 | 1458 |
7 | 344 |
8 | 8705 |
9 | 20413 |
10 | 49394 |
11 | 1332 |
12 | 1104114 |
13 | 2198 |
14 | 2217546 |
15 | 16305408 |
16 | 33820673 |
17 | 4914 |
18 | 532253187 |
19 | 6860 |
20 | 2392632274 |
21 | 10500716072 |
22 | 8591716802 |
23 | 12168 |
24 | 422182489826 |
25 | 30517593751 |
26 | 549760658274 |
27 | 7625984925160 |
[1,9,28,129,126,1458,344,8705,20413,49394,1332, 1104114,2198,2217546,16305408,33820673,4914, 532253187,6860,2392632274,10500716072,8591716802, 12168,422182489826,30517593751,549760658274, 7625984925160] |