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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 76 |
| 3 | 483 |
| 4 | 3481 |
| 5 | 25306 |
| 6 | 191456 |
| 7 | 1436962 |
| 8 | 10802667 |
| 9 | 81709584 |
| 10 | 622881909 |
| 11 | 4769974211 |
| 12 | 36631166224 |
| 13 | 282173132213 |
| 14 | 2179898773167 |
| 15 | 16878487835945 |
| 16 | 130935467642770 |
| 17 | 1017555976447868 |
| 18 | 7920656405513158 |
| 19 | 61741451812499715 |
[12,76,483,3481,25306,191456,1436962,10802667, 81709584,622881909,4769974211,36631166224, 282173132213,2179898773167,16878487835945, 130935467642770,1017555976447868,7920656405513158, 61741451812499715] |