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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4826809 |
| 2 | 244140625 |
| 3 | 2565726409 |
| 4 | 13841287201 |
| 5 | 51520374361 |
| 6 | 151334226289 |
| 7 | 377149515625 |
| 8 | 832972004929 |
| 9 | 1677100110841 |
| 10 | 3138428376721 |
| 11 | 5534900853769 |
| 12 | 9294114390625 |
| 13 | 14976071831449 |
| 14 | 23298085122481 |
[1,4826809,244140625,2565726409,13841287201, 51520374361,151334226289,377149515625, 832972004929,1677100110841,3138428376721, 5534900853769,9294114390625,14976071831449, 23298085122481] |