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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 9 |
| 4 | 15 |
| 5 | 49 |
| 6 | 121 |
| 7 | 143 |
| 8 | 169 |
| 9 | 187 |
| 10 | 221 |
| 11 | 289 |
| 12 | 319 |
| 13 | 323 |
| 14 | 341 |
| 15 | 437 |
| 16 | 493 |
| 17 | 533 |
| 18 | 551 |
| 19 | 559 |
| 20 | 589 |
| 21 | 629 |
| 22 | 667 |
| 23 | 737 |
| 24 | 767 |
| 25 | 781 |
| 26 | 817 |
| 27 | 851 |
| 28 | 871 |
| 29 | 893 |
| 30 | 899 |
| 31 | 913 |
| 32 | 923 |
| 33 | 949 |
| 34 | 961 |
| 35 | 979 |
| 36 | 989 |
| 37 | 1027 |
| 38 | 1067 |
| 39 | 1079 |
| 40 | 1121 |
| 41 | 1219 |
| 42 | 1247 |
| 43 | 1273 |
| 44 | 1343 |
| 45 | 1357 |
| 46 | 1387 |
| 47 | 1411 |
| 48 | 1513 |
| 49 | 1577 |
[4,6,9,15,49,121,143,169,187,221,289,319,323,341, 437,493,533,551,559,589,629,667,737,767,781,817, 851,871,893,899,913,923,949,961,979,989,1027,1067, 1079,1121,1219,1247,1273,1343,1357,1387,1411,1513, 1577] |