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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 259 |
| 3 | 1045 |
| 4 | 19688 |
| 5 | 336357 |
| 6 | 4285397 |
| 7 | 63460724 |
| 8 | 950319651 |
| 9 | 13831198142 |
| 10 | 203362718849 |
| 11 | 2996519345158 |
| 12 | 44069974577249 |
| 13 | 648396325752902 |
| 14 | 9541613955300209 |
| 15 | 140380983573276762 |
| 16 | 2065580574184245251 |
[16,259,1045,19688,336357,4285397,63460724, 950319651,13831198142,203362718849,2996519345158, 44069974577249,648396325752902,9541613955300209, 140380983573276762,2065580574184245251] |