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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 21 |
| 3 | 29 |
| 4 | 105 |
| 5 | 379 |
| 6 | 1245 |
| 7 | 5458 |
| 8 | 25315 |
| 9 | 111407 |
| 10 | 527886 |
| 11 | 2563160 |
| 12 | 12170793 |
| 13 | 58396626 |
| 14 | 282895106 |
| 15 | 1362930990 |
| 16 | 6568303800 |
| 17 | 31746692725 |
| 18 | 153297619453 |
| 19 | 739913361896 |
| 20 | 3573891092629 |
| 21 | 17261311752935 |
| 22 | 83352383451568 |
| 23 | 402555795489298 |
[5,21,29,105,379,1245,5458,25315,111407,527886, 2563160,12170793,58396626,282895106,1362930990, 6568303800,31746692725,153297619453,739913361896, 3573891092629,17261311752935,83352383451568, 402555795489298] |