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| n | a(n) |
|---|---|
| 9 | 672 |
| 10 | 5454 |
| 11 | 40272 |
| 12 | 283688 |
| 13 | 1948408 |
| 14 | 13188482 |
| 15 | 88469166 |
| 16 | 589852620 |
| 17 | 3914957358 |
| 18 | 25886899652 |
| 19 | 170722453774 |
| 20 | 1123938295984 |
| 21 | 7390061858416 |
| 22 | 48546948619410 |
| 23 | 318711158282218 |
| 24 | 2091405520367970 |
| 25 | 13719823343200698 |
| 26 | 89986405527666712 |
| 27 | 590148303249975384 |
[672,5454,40272,283688,1948408,13188482,88469166, 589852620,3914957358,25886899652,170722453774, 1123938295984,7390061858416,48546948619410, 318711158282218,2091405520367970, 13719823343200698,89986405527666712, 590148303249975384] |