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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 134 |
| 3 | 888 |
| 4 | 11850 |
| 5 | 114205 |
| 6 | 1276986 |
| 7 | 13500114 |
| 8 | 135563958 |
| 9 | 1464662469 |
| 10 | 15975572837 |
| 11 | 167590942240 |
| 12 | 1768832921236 |
| 13 | 19029812782209 |
| 14 | 203511535493020 |
| 15 | 2157669619156227 |
| 16 | 22971322152723986 |
| 17 | 245668877166018309 |
| 18 | 2619846491701562613 |
| 19 | 27883612518177103171 |
| 20 | 297316240949616974969 |
[16,134,888,11850,114205,1276986,13500114, 135563958,1464662469,15975572837,167590942240, 1768832921236,19029812782209,203511535493020, 2157669619156227,22971322152723986, 245668877166018309,2619846491701562613, 27883612518177103171,297316240949616974969] |