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| n | a(n) |
|---|---|
| 0 | 256 |
| 1 | 65536 |
| 2 | 614656 |
| 3 | 2560000 |
| 4 | 7311616 |
| 5 | 16777216 |
| 6 | 33362176 |
| 7 | 59969536 |
| 8 | 100000000 |
| 9 | 157351936 |
| 10 | 236421376 |
| 11 | 342102016 |
| 12 | 479785216 |
| 13 | 655360000 |
| 14 | 875213056 |
| 15 | 1146228736 |
| 16 | 1475789056 |
| 17 | 1871773696 |
| 18 | 2342560000 |
[256,65536,614656,2560000,7311616,16777216, 33362176,59969536,100000000,157351936,236421376, 342102016,479785216,655360000,875213056, 1146228736,1475789056,1871773696,2342560000] |