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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 81 |
| 4 | 121 |
| 5 | 144 |
| 6 | 441 |
| 7 | 484 |
| 8 | 841 |
| 9 | 1444 |
| 10 | 8281 |
| 11 | 11881 |
| 12 | 14884 |
| 13 | 28224 |
| 14 | 48841 |
| 15 | 114244 |
| 16 | 128881 |
| 17 | 142884 |
| 18 | 221841 |
| 19 | 228484 |
| 20 | 848241 |
| 21 | 1121481 |
| 22 | 1281424 |
| 23 | 1418481 |
| 24 | 2184484 |
| 25 | 2214144 |
| 26 | 8282884 |
| 27 | 11142244 |
| 28 | 11282881 |
| 29 | 18241441 |
| 30 | 18818244 |
| 31 | 18844281 |
| 32 | 21242881 |
| 33 | 21818241 |
| 34 | 28281124 |
| 35 | 82428241 |
| 36 | 121242121 |
| 37 | 121484484 |
| 38 | 124121881 |
[1,4,81,121,144,441,484,841,1444,8281,11881,14884, 28224,48841,114244,128881,142884,221841,228484, 848241,1121481,1281424,1418481,2184484,2214144, 8282884,11142244,11282881,18241441,18818244, 18844281,21242881,21818241,28281124,82428241, 121242121,121484484,124121881] |