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| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 3 |
| 2 | 11 |
| 3 | 59 |
| 4 | 339 |
| 5 | 1971 |
| 6 | 11483 |
| 7 | 66923 |
| 8 | 390051 |
| 9 | 2273379 |
| 10 | 13250219 |
| 11 | 77227931 |
| 12 | 450117363 |
| 13 | 2623476243 |
| 14 | 15290740091 |
| 15 | 89120964299 |
| 16 | 519435045699 |
| 17 | 3027489309891 |
| 18 | 17645500813643 |
| 19 | 102845515571963 |
| 20 | 599427592618131 |
| 21 | 3493720040136819 |
| 22 | 20362892648202779 |
| 23 | 118683635849079851 |
| 24 | 691738922446276323 |
[3,3,11,59,339,1971,11483,66923,390051,2273379, 13250219,77227931,450117363,2623476243, 15290740091,89120964299,519435045699, 3027489309891,17645500813643,102845515571963, 599427592618131,3493720040136819, 20362892648202779,118683635849079851, 691738922446276323] |