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| n | a(n) |
|---|---|
| 1 | 256 |
| 2 | 2228 |
| 3 | 19856 |
| 4 | 171436 |
| 5 | 1503360 |
| 6 | 13078180 |
| 7 | 114229184 |
| 8 | 995583500 |
| 9 | 8688160944 |
| 10 | 75762394644 |
| 11 | 660932725968 |
| 12 | 5764551429420 |
| 13 | 50283755683392 |
| 14 | 438589701233540 |
| 15 | 3825664710332480 |
| 16 | 33369191924137804 |
| 17 | 291064911609837232 |
[256,2228,19856,171436,1503360,13078180,114229184, 995583500,8688160944,75762394644,660932725968, 5764551429420,50283755683392,438589701233540, 3825664710332480,33369191924137804, 291064911609837232] |