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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 31 |
| 3 | 41 |
| 4 | 71 |
| 5 | 79 |
| 6 | 109 |
| 7 | 131 |
| 8 | 149 |
| 9 | 151 |
| 10 | 181 |
| 11 | 191 |
| 12 | 241 |
| 13 | 251 |
| 14 | 379 |
| 15 | 409 |
| 16 | 421 |
| 17 | 499 |
| 18 | 509 |
| 19 | 541 |
| 20 | 599 |
| 21 | 631 |
| 22 | 659 |
| 23 | 709 |
| 24 | 719 |
| 25 | 769 |
| 26 | 919 |
| 27 | 1009 |
| 28 | 1019 |
| 29 | 1021 |
| 30 | 1031 |
| 31 | 1109 |
| 32 | 1129 |
| 33 | 1151 |
| 34 | 1201 |
| 35 | 1231 |
| 36 | 1291 |
| 37 | 1399 |
| 38 | 1409 |
| 39 | 1451 |
| 40 | 1549 |
| 41 | 1601 |
| 42 | 1621 |
| 43 | 1721 |
| 44 | 1871 |
| 45 | 1931 |
| 46 | 2069 |
| 47 | 2131 |
| 48 | 2179 |
[19,31,41,71,79,109,131,149,151,181,191,241,251, 379,409,421,499,509,541,599,631,659,709,719,769, 919,1009,1019,1021,1031,1109,1129,1151,1201,1231, 1291,1399,1409,1451,1549,1601,1621,1721,1871,1931, 2069,2131,2179] |