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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 25 |
| 2 | 2545 |
| 3 | 372145 |
| 4 | 63435145 |
| 5 | 11796180169 |
| 6 | 2320539673225 |
| 7 | 474838887231625 |
| 8 | 100035931337622625 |
| 9 | 21552788197602942625 |
| 10 | 4726913659271173170145 |
| 11 | 1051798742538350304851425 |
| 12 | 236861100204680963085573025 |
[1,25,2545,372145,63435145,11796180169, 2320539673225,474838887231625,100035931337622625, 21552788197602942625,4726913659271173170145, 1051798742538350304851425, 236861100204680963085573025] |