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| n | a(n) |
|---|---|
| 1 | 625 |
| 2 | 62696 |
| 3 | 174000 |
| 4 | 542940 |
| 5 | 1546496 |
| 6 | 4697060 |
| 7 | 13716476 |
| 8 | 42266448 |
| 9 | 137268524 |
| 10 | 432014132 |
| 11 | 1349545464 |
| 12 | 4231840236 |
| 13 | 13782839880 |
| 14 | 43359019136 |
| 15 | 137060135072 |
| 16 | 432317230340 |
| 17 | 1404453869116 |
| 18 | 4429418463040 |
| 19 | 14067958304776 |
| 20 | 44544242171944 |
[625,62696,174000,542940,1546496,4697060,13716476, 42266448,137268524,432014132,1349545464, 4231840236,13782839880,43359019136,137060135072, 432317230340,1404453869116,4429418463040, 14067958304776,44544242171944] |