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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 175 |
| 3 | 16250 |
| 4 | 2348125 |
| 5 | 463050000 |
| 6 | 115966796875 |
| 7 | 35253537343750 |
| 8 | 12611991884765625 |
| 9 | 5191587030710937500 |
| 10 | 2417311348659677734375 |
| 11 | 1256208098030090332031250 |
| 12 | 720779749270420907470703125 |
| 13 | 452589644988876542822265625000 |
| 14 | 308707218248583408960223388671875 |
[1,4,175,16250,2348125,463050000,115966796875, 35253537343750,12611991884765625, 5191587030710937500,2417311348659677734375, 1256208098030090332031250, 720779749270420907470703125, 452589644988876542822265625000, 308707218248583408960223388671875] |