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| n | a(n) |
|---|---|
| 1 | 14 |
| 2 | 46 |
| 3 | 139 |
| 4 | 364 |
| 5 | 849 |
| 6 | 1928 |
| 7 | 4281 |
| 8 | 9315 |
| 9 | 19741 |
| 10 | 40967 |
| 11 | 84289 |
| 12 | 172238 |
| 13 | 349179 |
| 14 | 700980 |
| 15 | 1406113 |
| 16 | 2817168 |
| 17 | 5640787 |
| 18 | 11280975 |
| 19 | 22553200 |
| 20 | 45097300 |
| 21 | 90149110 |
| 22 | 180171641 |
| 23 | 360001235 |
| 24 | 719290309 |
| 25 | 1437274041 |
| 26 | 2870143830 |
| 27 | 5726092077 |
| 28 | 11425527566 |
[14,46,139,364,849,1928,4281,9315,19741,40967, 84289,172238,349179,700980,1406113,2817168, 5640787,11280975,22553200,45097300,90149110, 180171641,360001235,719290309,1437274041, 2870143830,5726092077,11425527566] |