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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 90 |
| 3 | 1322 |
| 4 | 12164 |
| 5 | 200864 |
| 6 | 1867678 |
| 7 | 31042576 |
| 8 | 289075166 |
| 9 | 4812019390 |
| 10 | 44835430372 |
| 11 | 746652702602 |
| 12 | 6957950651414 |
| 13 | 115885487812848 |
| 14 | 1079973979330894 |
| 15 | 17987700634273696 |
| 16 | 167635681543897926 |
| 17 | 2792113987069613616 |
[16,90,1322,12164,200864,1867678,31042576, 289075166,4812019390,44835430372,746652702602, 6957950651414,115885487812848,1079973979330894, 17987700634273696,167635681543897926, 2792113987069613616] |