n | a(n) |
---|---|
1 | 7 |
2 | 49 |
3 | 336 |
4 | 2280 |
5 | 15324 |
6 | 102202 |
7 | 677200 |
8 | 4462414 |
9 | 29265308 |
10 | 191134204 |
11 | 1243794600 |
12 | 8068058218 |
13 | 52186113316 |
14 | 336696234188 |
15 | 2167362918200 |
16 | 13922979926042 |
17 | 89273834257404 |
18 | 571453869667592 |
19 | 3652311182519800 |
20 | 23309932135990218 |
[7,49,336,2280,15324,102202,677200,4462414, 29265308,191134204,1243794600,8068058218, 52186113316,336696234188,2167362918200, 13922979926042,89273834257404,571453869667592, 3652311182519800,23309932135990218] |