n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 15 |
4 | 105 |
5 | 947 |
6 | 10472 |
7 | 137337 |
8 | 2085605 |
9 | 36017472 |
10 | 697407850 |
11 | 14969626900 |
12 | 352877606716 |
13 | 9064191508018 |
14 | 252024567201300 |
15 | 7542036496650006 |
16 | 241721880399970938 |
17 | 8261159383595659128 |
18 | 299916384730043070880 |
19 | 11526945327529620432872 |
20 | 467583770376898192016104 |
[1,3,15,105,947,10472,137337,2085605,36017472, 697407850,14969626900,352877606716,9064191508018, 252024567201300,7542036496650006, 241721880399970938,8261159383595659128, 299916384730043070880,11526945327529620432872, 467583770376898192016104] |