n | a(n) |
---|---|
1 | 4 |
2 | 25 |
3 | 163 |
4 | 1056 |
5 | 6847 |
6 | 44391 |
7 | 287802 |
8 | 1865917 |
9 | 12097367 |
10 | 78431296 |
11 | 508496451 |
12 | 3296753387 |
13 | 21373960178 |
14 | 138574567177 |
15 | 898425491035 |
16 | 5824794400480 |
17 | 37764099690423 |
18 | 244837350020575 |
19 | 1587362824918602 |
20 | 10291406673539877 |
[4,25,163,1056,6847,44391,287802,1865917,12097367, 78431296,508496451,3296753387,21373960178, 138574567177,898425491035,5824794400480, 37764099690423,244837350020575,1587362824918602, 10291406673539877] |