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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 19 |
| 3 | 951 |
| 4 | 101126 |
| 5 | 19471950 |
| 6 | 6120757875 |
| 7 | 2923391598085 |
| 8 | 2012458144311874 |
| 9 | 1917251981582592942 |
| 10 | 2447403154245760930044 |
| 11 | 4077096587506331113785984 |
| 12 | 8671231633412537292307441446 |
| 13 | 23111533287530979373465097259402 |
[1,1,19,951,101126,19471950,6120757875, 2923391598085,2012458144311874, 1917251981582592942,2447403154245760930044, 4077096587506331113785984, 8671231633412537292307441446, 23111533287530979373465097259402] |