n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 12 |
6 | 64 |
7 | 391 |
8 | 2617 |
9 | 18738 |
10 | 141483 |
11 | 1116801 |
12 | 9160502 |
13 | 77745060 |
14 | 680550918 |
15 | 6129635386 |
16 | 56699324213 |
17 | 537823602765 |
18 | 5225075478099 |
19 | 51939709551433 |
20 | 527829047648887 |
21 | 5479728265490353 |
22 | 58079392804968241 |
23 | 628114208288086710 |
24 | 6927692801388774583 |
25 | 77887967322146451681 |
26 | 892270205641708989800 |
27 | 10410949755661589229619 |
[1,1,1,1,3,12,64,391,2617,18738,141483,1116801, 9160502,77745060,680550918,6129635386,56699324213, 537823602765,5225075478099,51939709551433, 527829047648887,5479728265490353, 58079392804968241,628114208288086710, 6927692801388774583,77887967322146451681, 892270205641708989800,10410949755661589229619] |