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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 249 |
| 3 | 35685 |
| 4 | 10111185 |
| 5 | 4751389125 |
| 6 | 3340612823625 |
| 7 | 3283368780817125 |
| 8 | 4298811797910254625 |
| 9 | 7231878476757166357125 |
| 10 | 15201052166635861806905625 |
| 11 | 39039802931404520330113153125 |
| 12 | 120286952837956153039829414000625 |
| 13 | 437924965690153644843300930097453125 |
[1,5,249,35685,10111185,4751389125,3340612823625, 3283368780817125,4298811797910254625, 7231878476757166357125,15201052166635861806905625, 39039802931404520330113153125, 120286952837956153039829414000625, 437924965690153644843300930097453125] |