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| n | a(n) |
|---|---|
| 1 | 282 |
| 2 | 834 |
| 3 | 3054 |
| 4 | 10450 |
| 5 | 36078 |
| 6 | 124538 |
| 7 | 427362 |
| 8 | 1470006 |
| 9 | 5070814 |
| 10 | 17463766 |
| 11 | 60088290 |
| 12 | 206866218 |
| 13 | 712422522 |
| 14 | 2453110742 |
| 15 | 8445738678 |
| 16 | 29078502866 |
| 17 | 100122283738 |
| 18 | 344737651282 |
| 19 | 1186962351454 |
| 20 | 4086804396094 |
| 21 | 14071307248710 |
[282,834,3054,10450,36078,124538,427362,1470006, 5070814,17463766,60088290,206866218,712422522, 2453110742,8445738678,29078502866,100122283738, 344737651282,1186962351454,4086804396094, 14071307248710] |