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| n | a(n) |
|---|---|
| 4 | 73 |
| 5 | 976 |
| 6 | 8416 |
| 7 | 59488 |
| 8 | 375698 |
| 9 | 2209276 |
| 10 | 12376430 |
| 11 | 66974912 |
| 12 | 353260192 |
| 13 | 1827146732 |
| 14 | 9306483104 |
| 15 | 46822023764 |
| 16 | 233203697318 |
| 17 | 1151770103264 |
| 18 | 5647971709608 |
| 19 | 27525892585476 |
| 20 | 133427763556914 |
| 21 | 643682934370820 |
| 22 | 3091947949892804 |
| 23 | 14794516505019096 |
| 24 | 70537743010768506 |
[73,976,8416,59488,375698,2209276,12376430, 66974912,353260192,1827146732,9306483104, 46822023764,233203697318,1151770103264, 5647971709608,27525892585476,133427763556914, 643682934370820,3091947949892804, 14794516505019096,70537743010768506] |