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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 102 |
| 3 | 707 |
| 4 | 5484 |
| 5 | 43200 |
| 6 | 343959 |
| 7 | 2750576 |
| 8 | 22038291 |
| 9 | 176729972 |
| 10 | 1417804827 |
| 11 | 11376450010 |
| 12 | 91293254853 |
| 13 | 732641545797 |
| 14 | 5879698617773 |
| 15 | 47187185316348 |
| 16 | 378700529124397 |
| 17 | 3039269539041872 |
| 18 | 24391768139474983 |
| 19 | 195757199474858916 |
[16,102,707,5484,43200,343959,2750576,22038291, 176729972,1417804827,11376450010,91293254853, 732641545797,5879698617773,47187185316348, 378700529124397,3039269539041872, 24391768139474983,195757199474858916] |