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| n | a(n) |
|---|---|
| 0 | 159 |
| 1 | 906 |
| 2 | 5664 |
| 3 | 34932 |
| 4 | 206652 |
| 5 | 1168620 |
| 6 | 6344268 |
| 7 | 33264780 |
| 8 | 169424652 |
| 9 | 842319372 |
| 10 | 4104041484 |
| 11 | 19659270156 |
| 12 | 92822679564 |
| 13 | 432877854732 |
| 14 | 1997218529292 |
| 15 | 9129086189580 |
| 16 | 41386604691468 |
| 17 | 186264812126220 |
| 18 | 832881548328972 |
| 19 | 3702608701685772 |
| 20 | 16373934411743244 |
[159,906,5664,34932,206652,1168620,6344268, 33264780,169424652,842319372,4104041484, 19659270156,92822679564,432877854732, 1997218529292,9129086189580,41386604691468, 186264812126220,832881548328972,3702608701685772, 16373934411743244] |