n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 1 |
4 | 4 |
5 | 4 |
6 | 13 |
7 | 13 |
8 | 58 |
9 | 68 |
10 | 386 |
11 | 540 |
12 | 3520 |
13 | 6019 |
14 | 47375 |
15 | 94643 |
16 | 905453 |
17 | 2187052 |
18 | 24871767 |
19 | 71992142 |
20 | 980875049 |
21 | 3393779522 |
22 | 55564082030 |
23 | 230467066626 |
24 | 4514573141799 |
25 | 22448445351838 |
26 | 526789383889476 |
27 | 3136759423470421 |
[1,2,1,4,4,13,13,58,68,386,540,3520,6019,47375, 94643,905453,2187052,24871767,71992142,980875049, 3393779522,55564082030,230467066626,4514573141799, 22448445351838,526789383889476,3136759423470421] |