This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 149 |
| 2 | 1409 |
| 3 | 1423 |
| 4 | 1427 |
| 5 | 1429 |
| 6 | 1433 |
| 7 | 1439 |
| 8 | 1447 |
| 9 | 1451 |
| 10 | 1453 |
| 11 | 1459 |
| 12 | 1471 |
| 13 | 1481 |
| 14 | 1483 |
| 15 | 1487 |
| 16 | 1489 |
| 17 | 1493 |
| 18 | 1499 |
| 19 | 2141 |
| 20 | 2143 |
| 21 | 5147 |
| 22 | 6143 |
| 23 | 8147 |
| 24 | 10141 |
| 25 | 11149 |
| 26 | 11411 |
| 27 | 11423 |
| 28 | 11437 |
| 29 | 11443 |
| 30 | 11447 |
| 31 | 11467 |
| 32 | 11471 |
| 33 | 11483 |
| 34 | 11489 |
| 35 | 11491 |
| 36 | 11497 |
| 37 | 12143 |
| 38 | 12149 |
| 39 | 13147 |
| 40 | 14009 |
| 41 | 14011 |
| 42 | 14029 |