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| n | a(n) |
|---|---|
| 1 | 128 |
| 2 | 16384 |
| 3 | 282332 |
| 4 | 3510380 |
| 5 | 59399960 |
| 6 | 1010709182 |
| 7 | 17747766886 |
| 8 | 305860450896 |
| 9 | 5299192047122 |
| 10 | 90905483794394 |
| 11 | 1561585881704909 |
| 12 | 26700641805782000 |
| 13 | 456727133705077304 |
| 14 | 7795581516009792174 |
| 15 | 133076226298723479664 |
[128,16384,282332,3510380,59399960,1010709182, 17747766886,305860450896,5299192047122, 90905483794394,1561585881704909,26700641805782000, 456727133705077304,7795581516009792174, 133076226298723479664] |