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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 256 |
| 3 | 1723 |
| 4 | 11637 |
| 5 | 65297 |
| 6 | 370045 |
| 7 | 1999150 |
| 8 | 10867960 |
| 9 | 58328512 |
| 10 | 313915268 |
| 11 | 1683430923 |
| 12 | 9037137069 |
| 13 | 48464436537 |
| 14 | 259999868553 |
| 15 | 1394419535984 |
| 16 | 7479394198332 |
| 17 | 40114452013630 |
| 18 | 215155499724100 |
| 19 | 1153964519450151 |
[16,256,1723,11637,65297,370045,1999150,10867960, 58328512,313915268,1683430923,9037137069, 48464436537,259999868553,1394419535984, 7479394198332,40114452013630,215155499724100, 1153964519450151] |