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| n | a(n) |
|---|---|
| 1 | 24 |
| 2 | 116 |
| 3 | 396 |
| 4 | 1108 |
| 5 | 2954 |
| 6 | 7640 |
| 7 | 19676 |
| 8 | 51060 |
| 9 | 133728 |
| 10 | 356546 |
| 11 | 961630 |
| 12 | 2639484 |
| 13 | 7312996 |
| 14 | 20540736 |
| 15 | 58061306 |
| 16 | 165704028 |
| 17 | 474754182 |
| 18 | 1368989652 |
| 19 | 3956576274 |
| 20 | 11483585258 |
| 21 | 33373408392 |
| 22 | 97258918906 |
| 23 | 283647632398 |
| 24 | 828748613072 |
[24,116,396,1108,2954,7640,19676,51060,133728, 356546,961630,2639484,7312996,20540736,58061306, 165704028,474754182,1368989652,3956576274, 11483585258,33373408392,97258918906,283647632398, 828748613072] |