n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 9 |
5 | 3 |
6 | 51 |
7 | 298 |
8 | 138 |
9 | 25 |
10 | 1831 |
11 | 40815 |
12 | 17853 |
13 | 4494 |
14 | 543 |
15 | 166930 |
16 | 23752151 |
17 | 7418420 |
18 | 1861755 |
19 | 325895 |
20 | 29281 |
21 | 36681301 |
22 | 55427713806 |
23 | 10701675348 |
24 | 2105585760 |
25 | 391017795 |
26 | 53021223 |
27 | 3781503 |
[1,1,1,4,9,3,51,298,138,25,1831,40815,17853,4494, 543,166930,23752151,7418420,1861755,325895,29281, 36681301,55427713806,10701675348,2105585760, 391017795,53021223,3781503] |