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| n | a(n) |
|---|---|
| 0 | 21147 |
| 1 | 70631 |
| 2 | 246218 |
| 3 | 894124 |
| 4 | 3376696 |
| 5 | 13241402 |
| 6 | 53840640 |
| 7 | 226700129 |
| 8 | 987249425 |
| 9 | 4441561814 |
| 10 | 36030130677 |
| 11 | 304732680254 |
| 12 | 2680347437333 |
| 13 | 24464119638740 |
| 14 | 231259760072836 |
| 15 | 2260282190355316 |
| 16 | 22806313600683717 |
| 17 | 237235598531081378 |
| 18 | 2540939492105630071 |
[21147,70631,246218,894124,3376696,13241402, 53840640,226700129,987249425,4441561814, 36030130677,304732680254,2680347437333, 24464119638740,231259760072836,2260282190355316, 22806313600683717,237235598531081378, 2540939492105630071] |