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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 73 |
| 3 | 89 |
| 4 | 503 |
| 5 | 2067 |
| 6 | 6605 |
| 7 | 30814 |
| 8 | 125890 |
| 9 | 498977 |
| 10 | 2155139 |
| 11 | 8861942 |
| 12 | 36747626 |
| 13 | 154763001 |
| 14 | 642080614 |
| 15 | 2680112672 |
| 16 | 11214564802 |
| 17 | 46726697684 |
| 18 | 195100127045 |
| 19 | 815043727773 |
| 20 | 3401063227613 |
| 21 | 14199101091753 |
| 22 | 59291666126346 |
[16,73,89,503,2067,6605,30814,125890,498977, 2155139,8861942,36747626,154763001,642080614, 2680112672,11214564802,46726697684,195100127045, 815043727773,3401063227613,14199101091753, 59291666126346] |