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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 9 |
| 3 | 25 |
| 4 | 93 |
| 5 | 353 |
| 6 | 1389 |
| 7 | 5505 |
| 8 | 21933 |
| 9 | 87553 |
| 10 | 349869 |
| 11 | 1398785 |
| 12 | 5593773 |
| 13 | 22372353 |
| 14 | 89483949 |
| 15 | 357924865 |
| 16 | 1431677613 |
| 17 | 5726666753 |
| 18 | 22906579629 |
| 19 | 91626143745 |
| 20 | 366504225453 |
| 21 | 1466016202753 |
| 22 | 5864063412909 |
| 23 | 23456250855425 |
| 24 | 93824997829293 |
[3,9,25,93,353,1389,5505,21933,87553,349869, 1398785,5593773,22372353,89483949,357924865, 1431677613,5726666753,22906579629,91626143745, 366504225453,1466016202753,5864063412909, 23456250855425,93824997829293] |