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| n | a(n) |
|---|---|
| 1 | 12876480001 |
| 2 | 102293818705 |
| 3 | 162303632569 |
| 4 | 639554081761 |
| 5 | 783962120161 |
| 6 | 3224063844001 |
| 7 | 4553777859841 |
| 8 | 10276904735461 |
| 9 | 40867660260505 |
| 10 | 51496980091921 |
| 11 | 51641004415105 |
| 12 | 52412615611201 |
| 13 | 52933062609505 |
| 14 | 73892907966241 |
| 15 | 97388953462801 |
| 16 | 107862864807061 |
| 17 | 182236335107905 |
| 18 | 210587050134721 |
[12876480001,102293818705,162303632569, 639554081761,783962120161,3224063844001, 4553777859841,10276904735461,40867660260505, 51496980091921,51641004415105,52412615611201, 52933062609505,73892907966241,97388953462801, 107862864807061,182236335107905,210587050134721] |