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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 450 |
| 3 | 450 |
| 4 | 2500 |
| 5 | 4539 |
| 6 | 2500 |
| 7 | 11100 |
| 8 | 44641 |
| 9 | 44641 |
| 10 | 11100 |
| 11 | 49284 |
| 12 | 312001 |
| 13 | 752562 |
| 14 | 312001 |
| 15 | 49284 |
| 16 | 192474 |
| 17 | 2173565 |
| 18 | 8183170 |
| 19 | 8183170 |
| 20 | 2173565 |
| 21 | 192474 |
| 22 | 751689 |
| 23 | 12097076 |
| 24 | 87487117 |
| 25 | 129062037 |
| 26 | 87487117 |
| 27 | 12097076 |
| 28 | 751689 |
| 29 | 2707641 |
| 30 | 67329896 |
[81,450,450,2500,4539,2500,11100,44641,44641, 11100,49284,312001,752562,312001,49284,192474, 2173565,8183170,8183170,2173565,192474,751689, 12097076,87487117,129062037,87487117,12097076, 751689,2707641,67329896] |