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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 36 |
| 3 | 98 |
| 4 | 271 |
| 5 | 665 |
| 6 | 1675 |
| 7 | 4344 |
| 8 | 11081 |
| 9 | 28136 |
| 10 | 71908 |
| 11 | 183709 |
| 12 | 468421 |
| 13 | 1195165 |
| 14 | 3050758 |
| 15 | 7784759 |
| 16 | 19863812 |
| 17 | 50690966 |
| 18 | 129357269 |
| 19 | 330093729 |
| 20 | 842344955 |
| 21 | 2149538940 |
| 22 | 5485269169 |
| 23 | 13997500468 |
| 24 | 35719380356 |
| 25 | 91150094557 |
| 26 | 232600215969 |
[6,36,98,271,665,1675,4344,11081,28136,71908, 183709,468421,1195165,3050758,7784759,19863812, 50690966,129357269,330093729,842344955,2149538940, 5485269169,13997500468,35719380356,91150094557, 232600215969] |