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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 73 |
| 3 | 241 |
| 4 | 271 |
| 5 | 409 |
| 6 | 439 |
| 7 | 601 |
| 8 | 607 |
| 9 | 769 |
| 10 | 937 |
| 11 | 1063 |
| 12 | 1231 |
| 13 | 1249 |
| 14 | 1399 |
| 15 | 1447 |
| 16 | 1657 |
| 17 | 1777 |
| 18 | 1993 |
| 19 | 2089 |
| 20 | 2239 |
| 21 | 2287 |
| 22 | 2383 |
| 23 | 2551 |
| 24 | 2593 |
| 25 | 2617 |
| 26 | 2719 |
| 27 | 2791 |
| 28 | 2833 |
| 29 | 3079 |
| 30 | 3121 |
| 31 | 3559 |
| 32 | 3583 |
| 33 | 3673 |
| 34 | 3769 |
| 35 | 3967 |
| 36 | 4177 |
| 37 | 4231 |
| 38 | 4297 |
| 39 | 4441 |
| 40 | 4567 |
| 41 | 4639 |
| 42 | 4759 |
[7,73,241,271,409,439,601,607,769,937,1063,1231, 1249,1399,1447,1657,1777,1993,2089,2239,2287,2383, 2551,2593,2617,2719,2791,2833,3079,3121,3559,3583, 3673,3769,3967,4177,4231,4297,4441,4567,4639,4759] |