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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 54 |
| 3 | 129 |
| 4 | 339 |
| 5 | 1123 |
| 6 | 4155 |
| 7 | 15273 |
| 8 | 55715 |
| 9 | 205199 |
| 10 | 758647 |
| 11 | 2804053 |
| 12 | 10360467 |
| 13 | 38311103 |
| 14 | 141717367 |
| 15 | 524247989 |
| 16 | 1939302323 |
| 17 | 7174276855 |
| 18 | 26541315667 |
| 19 | 98190495765 |
| 20 | 363259275051 |
| 21 | 1343896481903 |
| 22 | 4971825005443 |
| 23 | 18393576694105 |
[5,54,129,339,1123,4155,15273,55715,205199,758647, 2804053,10360467,38311103,141717367,524247989, 1939302323,7174276855,26541315667,98190495765, 363259275051,1343896481903,4971825005443, 18393576694105] |