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| n | a(n) |
|---|---|
| 1 | 128 |
| 2 | 747 |
| 3 | 32173 |
| 4 | 358972 |
| 5 | 10084740 |
| 6 | 150761147 |
| 7 | 3487451085 |
| 8 | 59854521809 |
| 9 | 1263544138037 |
| 10 | 23153469283080 |
| 11 | 468020809803575 |
| 12 | 8846294320139442 |
| 13 | 175169339607743899 |
| 14 | 3359920008363870018 |
| 15 | 65882834491610105219 |
[128,747,32173,358972,10084740,150761147, 3487451085,59854521809,1263544138037, 23153469283080,468020809803575,8846294320139442, 175169339607743899,3359920008363870018, 65882834491610105219] |