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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 121 |
| 3 | 625 |
| 4 | 94249 |
| 5 | 698896 |
| 6 | 1517824 |
| 7 | 5313025 |
| 8 | 6325225 |
| 9 | 6895876 |
| 10 | 6948496 |
| 11 | 7706176 |
| 12 | 15665764 |
| 13 | 63600625 |
| 14 | 95199049 |
| 15 | 170198116 |
| 16 | 449948944 |
| 17 | 522808225 |
| 18 | 562069264 |
| 19 | 1101576100 |
| 20 | 1183979281 |
| 21 | 1254505561 |
| 22 | 1271564281 |
| 23 | 1615718416 |
| 24 | 4045214404 |
| 25 | 9504885049 |
| 26 | 10989328900 |
[4,121,625,94249,698896,1517824,5313025,6325225, 6895876,6948496,7706176,15665764,63600625, 95199049,170198116,449948944,522808225,562069264, 1101576100,1183979281,1254505561,1271564281, 1615718416,4045214404,9504885049,10989328900] |