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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 6 |
| 3 | 24 |
| 4 | 77 |
| 5 | 378 |
| 6 | 1395 |
| 7 | 1395 |
| 8 | 1395 |
| 9 | 1395 |
| 10 | 31798 |
| 11 | 61457 |
| 12 | 240748 |
| 13 | 800583 |
| 14 | 804584 |
| 15 | 804584 |
| 16 | 804584 |
| 17 | 16118548 |
| 18 | 16138563 |
| 19 | 16138563 |
| 20 | 56307979 |
| 21 | 56307979 |
| 22 | 56307979 |
| 23 | 56307979 |
| 24 | 56307979 |
| 25 | 3511121443 |
| 26 | 3511121443 |
| 27 | 26284355567 |
| 28 | 26284355567 |
| 29 | 26284355567 |
| 30 | 118027458557 |
| 31 | 118027458557 |
| 32 | 118027458557 |
| 33 | 118027458557 |
[3,6,24,77,378,1395,1395,1395,1395,31798,61457, 240748,800583,804584,804584,804584,16118548, 16138563,16138563,56307979,56307979,56307979, 56307979,56307979,3511121443,3511121443, 26284355567,26284355567,26284355567,118027458557, 118027458557,118027458557,118027458557] |