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| n | a(n) |
|---|---|
| 4 | 5 |
| 5 | 24 |
| 6 | 95 |
| 7 | 356 |
| 8 | 1259 |
| 9 | 4354 |
| 10 | 14950 |
| 11 | 51312 |
| 12 | 176969 |
| 13 | 614932 |
| 14 | 2155155 |
| 15 | 7619844 |
| 16 | 27169659 |
| 17 | 97639358 |
| 18 | 353389474 |
| 19 | 1287216756 |
| 20 | 4715416601 |
| 21 | 17361594524 |
| 22 | 64213122743 |
| 23 | 238461037744 |
| 24 | 888778493004 |
| 25 | 3323529910514 |
| 26 | 12465333132757 |
| 27 | 46880502176400 |
| 28 | 176752359115621 |
[5,24,95,356,1259,4354,14950,51312,176969,614932, 2155155,7619844,27169659,97639358,353389474, 1287216756,4715416601,17361594524,64213122743, 238461037744,888778493004,3323529910514, 12465333132757,46880502176400,176752359115621] |