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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 50 |
| 3 | 143 |
| 4 | 505 |
| 5 | 1534 |
| 6 | 4781 |
| 7 | 15292 |
| 8 | 48838 |
| 9 | 158036 |
| 10 | 513942 |
| 11 | 1667199 |
| 12 | 5414178 |
| 13 | 17564422 |
| 14 | 56945634 |
| 15 | 184689939 |
| 16 | 599062331 |
| 17 | 1943671897 |
| 18 | 6307957298 |
| 19 | 20474330692 |
| 20 | 66462754716 |
| 21 | 215762437471 |
| 22 | 700476249766 |
| 23 | 2274214050189 |
| 24 | 7383913075835 |
[8,50,143,505,1534,4781,15292,48838,158036,513942, 1667199,5414178,17564422,56945634,184689939, 599062331,1943671897,6307957298,20474330692, 66462754716,215762437471,700476249766, 2274214050189,7383913075835] |