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| n | a(n) |
|---|---|
| 1 | 256 |
| 2 | 3096 |
| 3 | 37584 |
| 4 | 455808 |
| 5 | 5529360 |
| 6 | 67071552 |
| 7 | 813596592 |
| 8 | 9869111712 |
| 9 | 119714700240 |
| 10 | 1452167705472 |
| 11 | 17615140009200 |
| 12 | 213675837978720 |
| 13 | 2591938749790992 |
| 14 | 31440833634380352 |
| 15 | 381384791617780272 |
[256,3096,37584,455808,5529360,67071552,813596592, 9869111712,119714700240,1452167705472, 17615140009200,213675837978720,2591938749790992, 31440833634380352,381384791617780272] |