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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 16 |
| 5 | 17 |
| 6 | 140 |
| 7 | 65 |
| 8 | 1395 |
| 9 | 2969 |
| 10 | 22176 |
| 11 | 1025 |
| 12 | 1050766 |
| 13 | 4097 |
| 14 | 13010328 |
| 15 | 128268897 |
| 16 | 637598438 |
| 17 | 65537 |
| 18 | 64864962683 |
| 19 | 262145 |
| 20 | 1676258452736 |
| 21 | 28683380484257 |
| 22 | 24908619669860 |
| 23 | 4194305 |
| 24 | 30567710172480050 |
| 25 | 8756434134071649 |
| 26 | 62128557507554504 |
| 27 | 21271147396968151093 |
[1,3,5,16,17,140,65,1395,2969,22176,1025,1050766, 4097,13010328,128268897,637598438,65537, 64864962683,262145,1676258452736,28683380484257, 24908619669860,4194305,30567710172480050, 8756434134071649,62128557507554504, 21271147396968151093] |