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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 37 |
| 3 | 1 |
| 4 | 233 |
| 5 | 1441 |
| 6 | 1 |
| 7 | 8885 |
| 8 | 54757 |
| 9 | 1 |
| 10 | 337433 |
| 11 | 2079361 |
| 12 | 1 |
| 13 | 12813605 |
| 14 | 78960997 |
| 15 | 1 |
| 16 | 486579593 |
| 17 | 2998438561 |
| 18 | 1 |
| 19 | 18477210965 |
| 20 | 113861704357 |
| 21 | 1 |
| 22 | 701647437113 |
| 23 | 4323746327041 |
| 24 | 1 |
| 25 | 26644125399365 |
| 26 | 164188498723237 |
| 27 | 1 |
| 28 | 1011775117738793 |
[1,5,37,1,233,1441,1,8885,54757,1,337433,2079361, 1,12813605,78960997,1,486579593,2998438561,1, 18477210965,113861704357,1,701647437113, 4323746327041,1,26644125399365,164188498723237,1, 1011775117738793] |