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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 53 |
| 3 | 66 |
| 4 | 249 |
| 5 | 832 |
| 6 | 1926 |
| 7 | 5311 |
| 8 | 15604 |
| 9 | 41101 |
| 10 | 113581 |
| 11 | 322499 |
| 12 | 878867 |
| 13 | 2424634 |
| 14 | 6783680 |
| 15 | 18692607 |
| 16 | 51620360 |
| 17 | 143530053 |
| 18 | 396942014 |
| 19 | 1097506347 |
| 20 | 3043745061 |
| 21 | 8426485347 |
| 22 | 23316586078 |
| 23 | 64599682220 |
| 24 | 178884708707 |
| 25 | 495183784333 |
[8,53,66,249,832,1926,5311,15604,41101,113581, 322499,878867,2424634,6783680,18692607,51620360, 143530053,396942014,1097506347,3043745061, 8426485347,23316586078,64599682220,178884708707, 495183784333] |