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| n | a(n) |
|---|---|
| 1 | 125 |
| 2 | 701 |
| 3 | 3390 |
| 4 | 18924 |
| 5 | 94706 |
| 6 | 518711 |
| 7 | 2645966 |
| 8 | 14292754 |
| 9 | 73763850 |
| 10 | 394839392 |
| 11 | 2052818979 |
| 12 | 10924134430 |
| 13 | 57063130832 |
| 14 | 302529963932 |
| 15 | 1585024760524 |
| 16 | 8383254978829 |
| 17 | 44005652384769 |
| 18 | 232393583625579 |
| 19 | 1221371767402917 |
[125,701,3390,18924,94706,518711,2645966,14292754, 73763850,394839392,2052818979,10924134430, 57063130832,302529963932,1585024760524, 8383254978829,44005652384769,232393583625579, 1221371767402917] |