| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 316 |
| 4 | 12011 |
| 5 | 522376 |
| 6 | 24593348 |
| 7 | 1219951188 |
| 8 | 62798884331 |
| 9 | 3323228619736 |
| 10 | 179665076698136 |
| 11 | 9880531254032176 |
| 12 | 550994628527745476 |
| 13 | 31084678988906064016 |
| 14 | 1770908612898043660556 |
| 15 | 101738260887234550287316 |
[1,11,316,12011,522376,24593348,1219951188, 62798884331,3323228619736,179665076698136, 9880531254032176,550994628527745476, 31084678988906064016,1770908612898043660556, 101738260887234550287316] |