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| n | a(n) |
|---|---|
| 0 | 256 |
| 1 | 390625 |
| 2 | 16777216 |
| 3 | 214358881 |
| 4 | 1475789056 |
| 5 | 6975757441 |
| 6 | 25600000000 |
| 7 | 78310985281 |
| 8 | 208827064576 |
| 9 | 500246412961 |
| 10 | 1099511627776 |
| 11 | 2251875390625 |
| 12 | 4347792138496 |
| 13 | 7984925229121 |
| 14 | 14048223625216 |
| 15 | 23811286661761 |
| 16 | 39062500000000 |
| 17 | 62259690411361 |
| 18 | 96717311574016 |
| 19 | 146830437604321 |
[256,390625,16777216,214358881,1475789056, 6975757441,25600000000,78310985281,208827064576, 500246412961,1099511627776,2251875390625, 4347792138496,7984925229121,14048223625216, 23811286661761,39062500000000,62259690411361, 96717311574016,146830437604321] |