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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 8 |
| 3 | 13 |
| 4 | 26 |
| 5 | 43 |
| 6 | 109 |
| 7 | 319 |
| 8 | 718 |
| 9 | 1632 |
| 10 | 4351 |
| 11 | 10773 |
| 12 | 25199 |
| 13 | 62720 |
| 14 | 157051 |
| 15 | 379668 |
| 16 | 927104 |
| 17 | 2297777 |
| 18 | 5633013 |
| 19 | 13757409 |
| 20 | 33842016 |
| 21 | 83191131 |
| 22 | 203775710 |
| 23 | 499991378 |
| 24 | 1228342299 |
| 25 | 3013570173 |
| 26 | 7392226135 |
| 27 | 18147245684 |
| 28 | 44540437375 |
| 29 | 109282630804 |
[16,8,13,26,43,109,319,718,1632,4351,10773,25199, 62720,157051,379668,927104,2297777,5633013, 13757409,33842016,83191131,203775710,499991378, 1228342299,3013570173,7392226135,18147245684, 44540437375,109282630804] |