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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 9 |
| 3 | 81 |
| 4 | 144 |
| 5 | 900 |
| 6 | 3249 |
| 7 | 4356 |
| 8 | 7569 |
| 9 | 12321 |
| 10 | 14400 |
| 11 | 38025 |
| 12 | 59049 |
| 13 | 60516 |
| 14 | 77841 |
| 15 | 142884 |
| 16 | 145161 |
| 17 | 186624 |
| 18 | 202500 |
| 19 | 221841 |
| 20 | 230400 |
| 21 | 356409 |
| 22 | 423801 |
| 23 | 576081 |
| 24 | 656100 |
| 25 | 870489 |
| 26 | 974169 |
| 27 | 1108809 |
| 28 | 1838736 |
| 29 | 1855044 |
| 30 | 1971216 |
| 31 | 1979649 |
| 32 | 1988100 |
| 33 | 2396304 |
[4,9,81,144,900,3249,4356,7569,12321,14400,38025, 59049,60516,77841,142884,145161,186624,202500, 221841,230400,356409,423801,576081,656100,870489, 974169,1108809,1838736,1855044,1971216,1979649, 1988100,2396304] |