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| n | a(n) |
|---|---|
| 0 | 5 |
| 1 | 17 |
| 2 | 97 |
| 3 | 565 |
| 4 | 3293 |
| 5 | 19193 |
| 6 | 111865 |
| 7 | 651997 |
| 8 | 3800117 |
| 9 | 22148705 |
| 10 | 129092113 |
| 11 | 752403973 |
| 12 | 4385331725 |
| 13 | 25559586377 |
| 14 | 148972186537 |
| 15 | 868273532845 |
| 16 | 5060669010533 |
| 17 | 29495740530353 |
| 18 | 171913774171585 |
| 19 | 1001986904499157 |
[5,17,97,565,3293,19193,111865,651997,3800117, 22148705,129092113,752403973,4385331725, 25559586377,148972186537,868273532845, 5060669010533,29495740530353,171913774171585, 1001986904499157] |