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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 64 |
| 3 | 200 |
| 4 | 643 |
| 5 | 1835 |
| 6 | 4534 |
| 7 | 11511 |
| 8 | 27012 |
| 9 | 62814 |
| 10 | 144676 |
| 11 | 325111 |
| 12 | 733469 |
| 13 | 1635998 |
| 14 | 3639007 |
| 15 | 8091148 |
| 16 | 17910532 |
| 17 | 39681294 |
| 18 | 87775953 |
| 19 | 194044225 |
| 20 | 429056388 |
| 21 | 947971827 |
| 22 | 2094875648 |
| 23 | 4628499152 |
| 24 | 10225059546 |
| 25 | 22590584639 |
| 26 | 49903794405 |
[8,64,200,643,1835,4534,11511,27012,62814,144676, 325111,733469,1635998,3639007,8091148,17910532, 39681294,87775953,194044225,429056388,947971827, 2094875648,4628499152,10225059546,22590584639, 49903794405] |