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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 11 |
| 4 | 23 |
| 5 | 51 |
| 6 | 109 |
| 7 | 251 |
| 8 | 549 |
| 9 | 1291 |
| 10 | 2981 |
| 11 | 7067 |
| 12 | 16571 |
| 13 | 39601 |
| 14 | 94195 |
| 15 | 226997 |
| 16 | 544687 |
| 17 | 1320935 |
| 18 | 3194399 |
| 19 | 7797891 |
| 20 | 18996977 |
| 21 | 46651387 |
| 22 | 114353905 |
| 23 | 282109663 |
| 24 | 694793903 |
| 25 | 1720327219 |
| 26 | 4253521985 |
| 27 | 10565387267 |
| 28 | 26213565665 |
| 29 | 65300013637 |
| 30 | 162516950805 |
| 31 | 405892537979 |
[3,5,11,23,51,109,251,549,1291,2981,7067,16571, 39601,94195,226997,544687,1320935,3194399,7797891, 18996977,46651387,114353905,282109663,694793903, 1720327219,4253521985,10565387267,26213565665, 65300013637,162516950805,405892537979] |