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| n | a(n) |
|---|---|
| 1 | 23 |
| 2 | 53 |
| 3 | 73 |
| 4 | 139 |
| 5 | 277 |
| 6 | 281 |
| 7 | 283 |
| 8 | 307 |
| 9 | 313 |
| 10 | 347 |
| 11 | 359 |
| 12 | 383 |
| 13 | 449 |
| 14 | 571 |
| 15 | 733 |
| 16 | 751 |
| 17 | 947 |
| 18 | 1013 |
| 19 | 1049 |
| 20 | 1129 |
| 21 | 1151 |
| 22 | 1259 |
| 23 | 1381 |
| 24 | 1559 |
| 25 | 1621 |
| 26 | 1693 |
| 27 | 1973 |
| 28 | 2087 |
| 29 | 2089 |
| 30 | 2111 |
| 31 | 2251 |
| 32 | 2477 |
| 33 | 2539 |
| 34 | 2579 |
| 35 | 2593 |
| 36 | 2693 |
| 37 | 2801 |
| 38 | 2803 |
| 39 | 2917 |
| 40 | 3001 |
| 41 | 3121 |
| 42 | 3217 |
| 43 | 3373 |
| 44 | 3511 |
| 45 | 3617 |
| 46 | 3797 |
| 47 | 4013 |
| 48 | 4261 |
| 49 | 4463 |
| 50 | 4549 |
| 51 | 4567 |
| 52 | 4639 |
| 53 | 4643 |
[23,53,73,139,277,281,283,307,313,347,359,383,449, 571,733,751,947,1013,1049,1129,1151,1259,1381, 1559,1621,1693,1973,2087,2089,2111,2251,2477,2539, 2579,2593,2693,2801,2803,2917,3001,3121,3217,3373, 3511,3617,3797,4013,4261,4463,4549,4567,4639,4643] |