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| n | a(n) |
|---|---|
| 1 | 49 |
| 2 | 1681 |
| 3 | 144400 |
| 4 | 225625 |
| 5 | 256036 |
| 6 | 324900 |
| 7 | 576081 |
| 8 | 24019801 |
| 9 | 1299602500 |
| 10 | 1587624025 |
| 11 | 2371690000 |
| 12 | 2496401296 |
| 13 | 2528178961 |
| 14 | 2924105625 |
| 15 | 3132976729 |
| 16 | 5198410000 |
| 17 | 5616902916 |
| 18 | 6350496100 |
| 19 | 8122515625 |
| 20 | 9985605184 |
| 21 | 249001998001 |
[49,1681,144400,225625,256036,324900,576081, 24019801,1299602500,1587624025,2371690000, 2496401296,2528178961,2924105625,3132976729, 5198410000,5616902916,6350496100,8122515625, 9985605184,249001998001] |