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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 128 |
| 3 | 1988 |
| 4 | 31012 |
| 5 | 483600 |
| 6 | 7541492 |
| 7 | 117605364 |
| 8 | 1833990416 |
| 9 | 28600063044 |
| 10 | 446002115620 |
| 11 | 6955155548976 |
| 12 | 108461792028276 |
| 13 | 1691401471500596 |
| 14 | 26376467549478768 |
| 15 | 411326377629044484 |
| 16 | 6414406653053610276 |
[8,128,1988,31012,483600,7541492,117605364, 1833990416,28600063044,446002115620,6955155548976, 108461792028276,1691401471500596, 26376467549478768,411326377629044484, 6414406653053610276] |