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 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 11 |
| 6 | 15 |
| 7 | 27 |
| 8 | 55 |
| 9 | 87 |
| 10 | 105 |
| 11 | 111 |
| 12 | 163 |
| 13 | 225 |
| 14 | 311 |
| 15 | 487 |
| 16 | 537 |
| 17 | 723 |
| 18 | 735 |
| 19 | 771 |
| 20 | 1515 |
| 21 | 1599 |
| 22 | 4685 |
| 23 | 5523 |
| 24 | 5895 |
| 25 | 9723 |
| 26 | 20107 |
| 27 | 55035 |
| 28 | 66355 |
| 29 | 108393 |
| 30 | 181189 |
| 31 | 455645 |
| 32 | 604999 |
| 33 | 623005 |
| 34 | 829207 |
| 35 | 1019093 |
| 36 | 1246017 |
| 37 | 2099771 |
| 38 | 2163717 |
| 39 | 2266631 |
| 40 | 2348105 |
| 41 | 2688221 |
| 42 | 3002295 |