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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 106 |
| 4 | 21 |
| 5 | 1962 |
| 6 | 85 |
| 7 | 32426 |
| 8 | 341 |
| 9 | 522922 |
| 10 | 1365 |
| 11 | 8383146 |
| 12 | 5461 |
| 13 | 134195882 |
| 14 | 21845 |
| 15 | 2147396266 |
| 16 | 87381 |
| 17 | 34359388842 |
| 18 | 349525 |
| 19 | 549754415786 |
| 20 | 1398101 |
| 21 | 8796087429802 |
| 22 | 5592405 |
| 23 | 140737465985706 |
| 24 | 22369621 |
| 25 | 2251799724206762 |
| 26 | 89478485 |
| 27 | 36028796661050026 |
| 28 | 357913941 |
[1,2,5,106,21,1962,85,32426,341,522922,1365, 8383146,5461,134195882,21845,2147396266,87381, 34359388842,349525,549754415786,1398101, 8796087429802,5592405,140737465985706,22369621, 2251799724206762,89478485,36028796661050026, 357913941] |