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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 45 |
| 3 | 521 |
| 4 | 6733 |
| 5 | 92385 |
| 6 | 1316865 |
| 7 | 19274925 |
| 8 | 287694285 |
| 9 | 4359037985 |
| 10 | 66837293545 |
| 11 | 1034774126325 |
| 12 | 16149186405025 |
| 13 | 253737607849445 |
| 14 | 4009771017244485 |
| 15 | 63681603585696321 |
| 16 | 1015763347140335565 |
| 17 | 16264070907887454465 |
[1,5,45,521,6733,92385,1316865,19274925,287694285, 4359037985,66837293545,1034774126325, 16149186405025,253737607849445,4009771017244485, 63681603585696321,1015763347140335565, 16264070907887454465] |