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| n | a(n) |
|---|---|
| 1 | 256 |
| 2 | 551 |
| 3 | 1476 |
| 4 | 3287 |
| 5 | 8242 |
| 6 | 22944 |
| 7 | 56634 |
| 8 | 134576 |
| 9 | 355620 |
| 10 | 930398 |
| 11 | 2243778 |
| 12 | 5643712 |
| 13 | 14874838 |
| 14 | 37124894 |
| 15 | 91485986 |
| 16 | 236607962 |
| 17 | 604605716 |
| 18 | 1496818690 |
| 19 | 3791471588 |
| 20 | 9741618048 |
| 21 | 24444280948 |
| 22 | 61293997138 |
| 23 | 156547740090 |
| 24 | 396868734430 |
[256,551,1476,3287,8242,22944,56634,134576,355620, 930398,2243778,5643712,14874838,37124894,91485986, 236607962,604605716,1496818690,3791471588, 9741618048,24444280948,61293997138,156547740090, 396868734430] |