n | a(n) |
---|---|
0 | 2 |
1 | 17 |
2 | 130 |
3 | 940 |
4 | 6550 |
5 | 44475 |
6 | 296250 |
7 | 1944375 |
8 | 12612500 |
9 | 81035000 |
10 | 516537500 |
11 | 3270615625 |
12 | 20591031250 |
13 | 128998328125 |
14 | 804673593750 |
15 | 5000444062500 |
16 | 30969644531250 |
17 | 191231146484375 |
18 | 1177627753906250 |
19 | 7234317013671875 |
20 | 44342955390625000 |
21 | 271252632343750000 |
[2,17,130,940,6550,44475,296250,1944375,12612500, 81035000,516537500,3270615625,20591031250, 128998328125,804673593750,5000444062500, 30969644531250,191231146484375,1177627753906250, 7234317013671875,44342955390625000, 271252632343750000] |