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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 256 |
| 3 | 13122 |
| 4 | 131072 |
| 5 | 1562500 |
| 6 | 3359232 |
| 7 | 34588806 |
| 8 | 67108864 |
| 9 | 258280326 |
| 10 | 400000000 |
| 11 | 2143588810 |
| 12 | 1719926784 |
| 13 | 9788768652 |
| 14 | 8854734336 |
| 15 | 20503125000 |
| 16 | 34359738368 |
| 17 | 111612119056 |
| 18 | 66119763456 |
| 19 | 305704134738 |
| 20 | 204800000000 |
| 21 | 453874312332 |
| 22 | 548758735360 |
| 23 | 1722841676182 |
| 24 | 880602513408 |
| 25 | 3051757812500 |
[1,256,13122,131072,1562500,3359232,34588806, 67108864,258280326,400000000,2143588810, 1719926784,9788768652,8854734336,20503125000, 34359738368,111612119056,66119763456,305704134738, 204800000000,453874312332,548758735360, 1722841676182,880602513408,3051757812500] |