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| n | a(n) |
|---|---|
| 1 | 246 |
| 2 | 1910 |
| 3 | 14825 |
| 4 | 115069 |
| 5 | 893145 |
| 6 | 6932452 |
| 7 | 53808589 |
| 8 | 417653681 |
| 9 | 3241761282 |
| 10 | 25162034228 |
| 11 | 195303697871 |
| 12 | 1515916163938 |
| 13 | 11766299569341 |
| 14 | 91328141257666 |
| 15 | 708874471232044 |
| 16 | 5502170623914248 |
| 17 | 42706971125717460 |
| 18 | 331484700748035803 |
[246,1910,14825,115069,893145,6932452,53808589, 417653681,3241761282,25162034228,195303697871, 1515916163938,11766299569341,91328141257666, 708874471232044,5502170623914248, 42706971125717460,331484700748035803] |