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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 94 |
| 3 | 255 |
| 4 | 1516 |
| 5 | 8734 |
| 6 | 48567 |
| 7 | 282463 |
| 8 | 1774950 |
| 9 | 11228442 |
| 10 | 70910634 |
| 11 | 457532212 |
| 12 | 2961818801 |
| 13 | 19161856034 |
| 14 | 124734623018 |
| 15 | 812517208743 |
| 16 | 5292463879491 |
| 17 | 34538146713972 |
| 18 | 225412286656429 |
| 19 | 1471173825589666 |
| 20 | 9607289878561764 |
[16,94,255,1516,8734,48567,282463,1774950, 11228442,70910634,457532212,2961818801, 19161856034,124734623018,812517208743, 5292463879491,34538146713972,225412286656429, 1471173825589666,9607289878561764] |