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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 1257 |
| 3 | 238636 |
| 4 | 77767945 |
| 5 | 36470203156 |
| 6 | 22228291051255 |
| 7 | 16513520723284922 |
| 8 | 14323116388173517180 |
| 9 | 14071120934043157192832 |
| 10 | 15313737501505148093502344 |
| 11 | 18156604289232210133044514152 |
| 12 | 23151467541948649805794187113781 |
| 13 | 31425801906523386705389663813716908 |
[1,16,1257,238636,77767945,36470203156, 22228291051255,16513520723284922, 14323116388173517180,14071120934043157192832, 15313737501505148093502344, 18156604289232210133044514152, 23151467541948649805794187113781, 31425801906523386705389663813716908] |