n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 7 |
6 | 1 |
7 | 28 |
8 | 9 |
9 | 229 |
10 | 55 |
11 | 5513 |
12 | 1233 |
13 | 246733 |
14 | 35489 |
15 | 18835539 |
16 | 2205048 |
17 | 2577591714 |
18 | 236261747 |
19 | 672360073942 |
20 | 49798609885 |
21 | 337403612881491 |
22 | 18952604466995 |
23 | 317710878094077132 |
24 | 13788718527302227 |
[1,1,1,1,7,1,28,9,229,55,5513,1233,246733,35489, 18835539,2205048,2577591714,236261747, 672360073942,49798609885,337403612881491, 18952604466995,317710878094077132, 13788718527302227] |