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| n | a(n) |
|---|---|
| 7 | 8 |
| 8 | 76 |
| 9 | 440 |
| 10 | 2019 |
| 11 | 8147 |
| 12 | 30367 |
| 13 | 107061 |
| 14 | 361655 |
| 15 | 1181761 |
| 16 | 3762817 |
| 17 | 11733393 |
| 18 | 35957132 |
| 19 | 108591703 |
| 20 | 323914688 |
| 21 | 955984083 |
| 22 | 2795513143 |
| 23 | 8108894051 |
| 24 | 23354358683 |
| 25 | 66838785954 |
| 26 | 190211189706 |
| 27 | 538567451991 |
| 28 | 1517943035326 |
[8,76,440,2019,8147,30367,107061,361655,1181761, 3762817,11733393,35957132,108591703,323914688, 955984083,2795513143,8108894051,23354358683, 66838785954,190211189706,538567451991, 1517943035326] |