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| n | a(n) |
|---|---|
| 1 | 26 |
| 2 | 676 |
| 3 | 4374 |
| 4 | 26685 |
| 5 | 158847 |
| 6 | 955073 |
| 7 | 5788524 |
| 8 | 34901455 |
| 9 | 210178620 |
| 10 | 1268454968 |
| 11 | 7652012583 |
| 12 | 46136741805 |
| 13 | 278268558895 |
| 14 | 1678429458230 |
| 15 | 10122469053445 |
| 16 | 61049336691480 |
| 17 | 368205520547934 |
| 18 | 2220708116004047 |
| 19 | 13393382573976615 |
[26,676,4374,26685,158847,955073,5788524,34901455, 210178620,1268454968,7652012583,46136741805, 278268558895,1678429458230,10122469053445, 61049336691480,368205520547934,2220708116004047, 13393382573976615] |