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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 7 |
| 3 | 17 |
| 4 | 31 |
| 5 | 97 |
| 6 | 127 |
| 7 | 251 |
| 8 | 449 |
| 9 | 487 |
| 10 | 577 |
| 11 | 1151 |
| 12 | 1249 |
| 13 | 1567 |
| 14 | 1999 |
| 15 | 2663 |
| 16 | 4801 |
| 17 | 4999 |
| 18 | 7937 |
| 19 | 8191 |
| 20 | 12799 |
| 21 | 13121 |
| 22 | 13183 |
| 23 | 15551 |
| 24 | 31249 |
| 25 | 31751 |
| 26 | 32257 |
| 27 | 33857 |
| 28 | 35153 |
| 29 | 39367 |
| 30 | 65537 |
| 31 | 79201 |
| 32 | 81919 |
| 33 | 85751 |
| 34 | 115249 |
| 35 | 117127 |
| 36 | 124001 |
| 37 | 126001 |
| 38 | 131071 |
[3,7,17,31,97,127,251,449,487,577,1151,1249,1567, 1999,2663,4801,4999,7937,8191,12799,13121,13183, 15551,31249,31751,32257,33857,35153,39367,65537, 79201,81919,85751,115249,117127,124001,126001, 131071] |