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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 236 |
| 3 | 6205 |
| 4 | 143548 |
| 5 | 3426869 |
| 6 | 81988764 |
| 7 | 1958821107 |
| 8 | 46801360032 |
| 9 | 1118229413140 |
| 10 | 26717976955184 |
| 11 | 638375195180545 |
| 12 | 15252759731195845 |
| 13 | 364435654101670351 |
| 14 | 8707496129258580692 |
| 15 | 208049042144382510120 |
| 16 | 4970935766069111855568 |
[3,236,6205,143548,3426869,81988764,1958821107, 46801360032,1118229413140,26717976955184, 638375195180545,15252759731195845, 364435654101670351,8707496129258580692, 208049042144382510120,4970935766069111855568] |