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| n | a(n) |
|---|---|
| 2 | 960 |
| 3 | 5005 |
| 4 | 17017 |
| 5 | 46189 |
| 6 | 96577 |
| 7 | 212625 |
| 8 | 394240 |
| 9 | 765049 |
| 10 | 1361920 |
| 11 | 2027025 |
| 12 | 3065857 |
| 13 | 4385745 |
| 14 | 6314112 |
| 15 | 8973909 |
| 16 | 12780049 |
| 17 | 17116960 |
| 18 | 21191625 |
| 19 | 27428544 |
| 20 | 33980800 |
| 21 | 42600829 |
| 22 | 56581525 |
| 23 | 72382464 |
| 24 | 89835424 |
| 25 | 107972737 |
| 26 | 121330189 |
| 27 | 135745657 |
| 28 | 167244385 |
| 29 | 204917929 |
[960,5005,17017,46189,96577,212625,394240,765049, 1361920,2027025,3065857,4385745,6314112,8973909, 12780049,17116960,21191625,27428544,33980800, 42600829,56581525,72382464,89835424,107972737, 121330189,135745657,167244385,204917929] |