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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 360 |
| 2 | 3465 |
| 3 | 14560 |
| 4 | 41769 |
| 5 | 96096 |
| 6 | 191425 |
| 7 | 344520 |
| 8 | 575025 |
| 9 | 905464 |
| 10 | 1361241 |
| 11 | 1970640 |
| 12 | 2764825 |
| 13 | 3777840 |
| 14 | 5046609 |
| 15 | 6610936 |
| 16 | 8513505 |
| 17 | 10799880 |
| 18 | 13518505 |
| 19 | 16720704 |
| 20 | 20460681 |
| 21 | 24795520 |
| 22 | 29785185 |
| 23 | 35492520 |
| 24 | 41983249 |
| 25 | 49325976 |
| 26 | 57592185 |
| 27 | 66856240 |
| 28 | 77195385 |
[1,360,3465,14560,41769,96096,191425,344520, 575025,905464,1361241,1970640,2764825,3777840, 5046609,6610936,8513505,10799880,13518505, 16720704,20460681,24795520,29785185,35492520, 41983249,49325976,57592185,66856240,77195385] |