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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 76 |
| 4 | 2207 |
| 5 | 167761 |
| 6 | 33385282 |
| 7 | 17393796001 |
| 8 | 23725150497407 |
| 9 | 84722519070079276 |
| 10 | 792070839848372253127 |
| 11 | 19386725908489881939795601 |
| 12 | 1242282009792667284144565908482 |
| 13 | 208406472252232726621841472637412401 |
[1,7,76,2207,167761,33385282,17393796001, 23725150497407,84722519070079276, 792070839848372253127,19386725908489881939795601, 1242282009792667284144565908482, 208406472252232726621841472637412401] |