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 | 449 |
| 2 | 499 |
| 3 | 1009 |
| 4 | 1699 |
| 5 | 2549 |
| 6 | 4289 |
| 7 | 4441 |
| 8 | 4729 |
| 9 | 6449 |
| 10 | 6481 |
| 11 | 8419 |
| 12 | 9619 |
| 13 | 12149 |
| 14 | 14449 |
| 15 | 16361 |
| 16 | 16529 |
| 17 | 16729 |
| 18 | 16981 |
| 19 | 19681 |
| 20 | 21169 |
| 21 | 22549 |
| 22 | 24019 |
| 23 | 25121 |
| 24 | 25169 |
| 25 | 25841 |
| 26 | 28099 |
| 27 | 28949 |
| 28 | 30259 |
| 29 | 34819 |
| 30 | 36529 |
| 31 | 38449 |
| 32 | 41521 |
| 33 | 41681 |
| 34 | 41849 |
| 35 | 42209 |
| 36 | 43481 |
| 37 | 43721 |
| 38 | 43969 |
| 39 | 45329 |
| 40 | 46889 |