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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 41 |
| 3 | 356 |
| 4 | 4401 |
| 5 | 78826 |
| 6 | 1893481 |
| 7 | 56341416 |
| 8 | 1978638881 |
| 9 | 79749105326 |
| 10 | 3622010623401 |
| 11 | 182895318578956 |
| 12 | 10160561511881041 |
| 13 | 615728464210461906 |
| 14 | 40414538467581457001 |
| 15 | 2855999961062529064976 |
| 16 | 216180544920721807887681 |
[1,6,41,356,4401,78826,1893481,56341416, 1978638881,79749105326,3622010623401, 182895318578956,10160561511881041, 615728464210461906,40414538467581457001, 2855999961062529064976,216180544920721807887681] |