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| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 33 |
| 2 | 158 |
| 3 | 696 |
| 4 | 2886 |
| 5 | 11425 |
| 6 | 43590 |
| 7 | 161355 |
| 8 | 582340 |
| 9 | 2056818 |
| 10 | 7130388 |
| 11 | 24319054 |
| 12 | 81757104 |
| 13 | 271353288 |
| 14 | 890327048 |
| 15 | 2891047695 |
| 16 | 9299683770 |
| 17 | 29658374355 |
| 18 | 93843661530 |
| 19 | 294791108106 |
| 20 | 919849034686 |
| 21 | 2852495485953 |
| 22 | 8794877092878 |
| 23 | 26971256457596 |
| 24 | 82298545175130 |
[6,33,158,696,2886,11425,43590,161355,582340, 2056818,7130388,24319054,81757104,271353288, 890327048,2891047695,9299683770,29658374355, 93843661530,294791108106,919849034686, 2852495485953,8794877092878,26971256457596, 82298545175130] |