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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 224 |
| 4 | 2613 |
| 5 | 27458 |
| 6 | 271155 |
| 7 | 2620040 |
| 8 | 25457267 |
| 9 | 251964768 |
| 10 | 2537869322 |
| 11 | 25777827199 |
| 12 | 261509437991 |
| 13 | 2634407279895 |
| 14 | 26321038031960 |
| 15 | 261379965909359 |
| 16 | 2589357329707966 |
[1,16,224,2613,27458,271155,2620040,25457267, 251964768,2537869322,25777827199,261509437991, 2634407279895,26321038031960,261379965909359, 2589357329707966] |