n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 21 |
4 | 42 |
5 | 21 |
6 | 1849 |
7 | 5547 |
8 | 5547 |
9 | 1849 |
10 | 426405 |
11 | 1705620 |
12 | 2558430 |
13 | 1705620 |
14 | 426405 |
15 | 203374081 |
16 | 1016870405 |
17 | 2033740810 |
18 | 2033740810 |
19 | 1016870405 |
20 | 203374081 |
21 | 173959321557 |
22 | 1043755929342 |
23 | 2609389823355 |
24 | 3479186431140 |
25 | 2609389823355 |
26 | 1043755929342 |
27 | 173959321557 |
[1,1,1,21,42,21,1849,5547,5547,1849,426405, 1705620,2558430,1705620,426405,203374081, 1016870405,2033740810,2033740810,1016870405, 203374081,173959321557,1043755929342, 2609389823355,3479186431140,2609389823355, 1043755929342,173959321557] |