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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1250 |
| 2 | 2343750 |
| 3 | 5126953125 |
| 4 | 12176513671875 |
| 5 | 30441284179687500 |
| 6 | 78821182250976562500 |
| 7 | 209368765354156494140625 |
| 8 | 567040406167507171630859375 |
| 9 | 1559361116960644721984863281250 |
| 10 | 4341403109719976782798767089843750 |
| 11 | 12210196246087434701621532440185546875 |
[1,1250,2343750,5126953125,12176513671875, 30441284179687500,78821182250976562500, 209368765354156494140625, 567040406167507171630859375, 1559361116960644721984863281250, 4341403109719976782798767089843750, 12210196246087434701621532440185546875] |