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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 19 |
| 2 | 13413 |
| 3 | 5952243 |
| 4 | 2626057921 |
| 5 | 1162378878394 |
| 6 | 517174361985073 |
| 7 | 229681994753502100 |
| 8 | 101965922336345576219 |
| 9 | 45283517791861200639757 |
| 10 | 20109634299824273864511862 |
| 11 | 8930062817269356408791188106 |
| 12 | 3965614916098256915340694883017 |
| 13 | 1761030770921730133912679646624228 |
[1,19,13413,5952243,2626057921,1162378878394, 517174361985073,229681994753502100, 101965922336345576219,45283517791861200639757, 20109634299824273864511862, 8930062817269356408791188106, 3965614916098256915340694883017, 1761030770921730133912679646624228] |