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| n | a(n) |
|---|---|
| 1 | 2444 |
| 2 | 9072 |
| 3 | 38540 |
| 4 | 137381 |
| 5 | 396712 |
| 6 | 1041135 |
| 7 | 2401667 |
| 8 | 5134161 |
| 9 | 10237795 |
| 10 | 19375976 |
| 11 | 34979687 |
| 12 | 60950495 |
| 13 | 102473938 |
| 14 | 167690864 |
| 15 | 267520662 |
| 16 | 417725465 |
| 17 | 638733138 |
| 18 | 960355392 |
| 19 | 1420843461 |
| 20 | 2072173297 |
| 21 | 2981084336 |
| 22 | 4239345260 |
| 23 | 5961155164 |
[2444,9072,38540,137381,396712,1041135,2401667, 5134161,10237795,19375976,34979687,60950495, 102473938,167690864,267520662,417725465,638733138, 960355392,1420843461,2072173297,2981084336, 4239345260,5961155164] |