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| n | a(n) |
|---|---|
| 1 | 1824 |
| 2 | 10972 |
| 3 | 61896 |
| 4 | 403108 |
| 5 | 2384304 |
| 6 | 16476460 |
| 7 | 100402408 |
| 8 | 727727388 |
| 9 | 4526565112 |
| 10 | 34009964384 |
| 11 | 214493580576 |
| 12 | 1653020851316 |
| 13 | 10519851847336 |
| 14 | 82472356844020 |
| 15 | 527892783810376 |
| 16 | 4185126298632084 |
| 17 | 26885993638734088 |
| 18 | 214690431691380868 |
[1824,10972,61896,403108,2384304,16476460, 100402408,727727388,4526565112,34009964384, 214493580576,1653020851316,10519851847336, 82472356844020,527892783810376,4185126298632084, 26885993638734088,214690431691380868] |