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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 11 |
| 4 | 92 |
| 5 | 15481 |
| 6 | 411913 |
| 7 | 2482927 |
| 8 | 4181926481 |
| 9 | 10431687390203 |
| 10 | 1562251141547683 |
| 11 | 8527085144590567 |
| 12 | 29905005221325235087 |
| 13 | 563972987813159419491869 |
| 14 | 245998831704214345304467561 |
| 15 | 786438313703834134845784743061 |
| 16 | 493123210279233679062515691019 |
[1,4,11,92,15481,411913,2482927,4181926481, 10431687390203,1562251141547683,8527085144590567, 29905005221325235087,563972987813159419491869, 245998831704214345304467561, 786438313703834134845784743061, 493123210279233679062515691019] |