n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 5 |
4 | 24 |
5 | 139 |
6 | 945 |
7 | 7377 |
8 | 65016 |
9 | 638418 |
10 | 6910650 |
11 | 81747665 |
12 | 1049089470 |
13 | 14516096009 |
14 | 215419836359 |
15 | 3412889885571 |
16 | 57492203734320 |
17 | 1026121982213480 |
18 | 19342642266760680 |
19 | 383995631680561234 |
20 | 8007915240045479980 |
21 | 175020604366224762038 |
22 | 4000551483475536398178 |
[1,1,5,24,139,945,7377,65016,638418,6910650, 81747665,1049089470,14516096009,215419836359, 3412889885571,57492203734320,1026121982213480, 19342642266760680,383995631680561234, 8007915240045479980,175020604366224762038, 4000551483475536398178] |