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| n | a(n) |
|---|---|
| 0 | 279 |
| 1 | 3996 |
| 2 | 16008 |
| 3 | 64784 |
| 4 | 260640 |
| 5 | 1045568 |
| 6 | 4188288 |
| 7 | 16765184 |
| 8 | 67084800 |
| 9 | 268387328 |
| 10 | 1073645568 |
| 11 | 4294774784 |
| 12 | 17179484160 |
| 13 | 68718706688 |
| 14 | 274876366848 |
| 15 | 1099508547584 |
| 16 | 4398040350720 |
| 17 | 17592173723648 |
| 18 | 70368719536128 |
[279,3996,16008,64784,260640,1045568,4188288, 16765184,67084800,268387328,1073645568,4294774784, 17179484160,68718706688,274876366848, 1099508547584,4398040350720,17592173723648, 70368719536128] |