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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 13 |
| 4 | 1 |
| 5 | 61 |
| 6 | 1 |
| 7 | 245 |
| 8 | 5 |
| 9 | 1013 |
| 10 | 5 |
| 11 | 4085 |
| 12 | 5 |
| 13 | 16341 |
| 14 | 21 |
| 15 | 65365 |
| 16 | 85 |
| 17 | 261973 |
| 18 | 85 |
| 19 | 1048405 |
| 20 | 85 |
| 21 | 4194133 |
| 22 | 85 |
| 23 | 16777045 |
| 24 | 85 |
| 25 | 67108181 |
| 26 | 341 |
| 27 | 268432725 |
| 28 | 1365 |
| 29 | 1073730901 |
| 30 | 5461 |
| 31 | 4294923605 |
| 32 | 21845 |
| 33 | 17179825493 |
| 34 | 21845 |
| 35 | 68719433045 |
| 36 | 21845 |
| 37 | 274877863253 |
| 38 | 21845 |
[1,1,1,13,1,61,1,245,5,1013,5,4085,5,16341,21, 65365,85,261973,85,1048405,85,4194133,85,16777045, 85,67108181,341,268432725,1365,1073730901,5461, 4294923605,21845,17179825493,21845,68719433045, 21845,274877863253,21845] |