| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 16 |
| 4 | 19 |
| 5 | 35 |
| 6 | 89 |
| 7 | 213 |
| 8 | 515 |
| 9 | 728 |
| 10 | 1243 |
| 11 | 6943 |
| 12 | 15129 |
| 13 | 22072 |
| 14 | 1030441 |
| 15 | 1052513 |
| 16 | 3135467 |
| 17 | 16729848 |
| 18 | 19865315 |
| 19 | 36595163 |
| 20 | 93055641 |
| 21 | 222706445 |
| 22 | 538468531 |
| 23 | 761174976 |
| 24 | 1299643507 |
| 25 | 7259392511 |
| 26 | 15818428529 |
| 27 | 23077821040 |
| 28 | 1077398196369 |
| 29 | 1100476017409 |
[1,1,3,16,19,35,89,213,515,728,1243,6943,15129, 22072,1030441,1052513,3135467,16729848,19865315, 36595163,93055641,222706445,538468531,761174976, 1299643507,7259392511,15818428529,23077821040, 1077398196369,1100476017409] |