n | a(n) |
---|---|
4 | 4 |
5 | 90 |
6 | 1349 |
7 | 17220 |
8 | 203568 |
9 | 2312094 |
10 | 25691670 |
11 | 282000444 |
12 | 3074136464 |
13 | 33387698708 |
14 | 361969672904 |
15 | 3921901043440 |
16 | 42499598861832 |
17 | 460831546801414 |
18 | 5001468564165262 |
19 | 54341248085414380 |
[4,90,1349,17220,203568,2312094,25691670, 282000444,3074136464,33387698708,361969672904, 3921901043440,42499598861832,460831546801414, 5001468564165262,54341248085414380] |