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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 57 |
| 3 | 243 |
| 4 | 905 |
| 5 | 3135 |
| 6 | 10292 |
| 7 | 32556 |
| 8 | 100065 |
| 9 | 300847 |
| 10 | 888587 |
| 11 | 2586994 |
| 12 | 7441963 |
| 13 | 21193523 |
| 14 | 59838942 |
| 15 | 167704775 |
| 16 | 466986683 |
| 17 | 1293018711 |
| 18 | 3562315723 |
| 19 | 9770764284 |
| 20 | 26693067952 |
| 21 | 72663897633 |
| 22 | 197170483178 |
| 23 | 533459459628 |
| 24 | 1439508706370 |
[11,57,243,905,3135,10292,32556,100065,300847, 888587,2586994,7441963,21193523,59838942, 167704775,466986683,1293018711,3562315723, 9770764284,26693067952,72663897633,197170483178, 533459459628,1439508706370] |