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 | 3 |
| 2 | 7 |
| 3 | 13 |
| 4 | 19 |
| 5 | 43 |
| 6 | 103 |
| 7 | 127 |
| 8 | 211 |
| 9 | 223 |
| 10 | 241 |
| 11 | 283 |
| 12 | 349 |
| 13 | 397 |
| 14 | 421 |
| 15 | 439 |
| 16 | 727 |
| 17 | 733 |
| 18 | 787 |
| 19 | 829 |
| 20 | 853 |
| 21 | 883 |
| 22 | 1597 |
| 23 | 1723 |
| 24 | 1741 |
| 25 | 1777 |
| 26 | 2017 |
| 27 | 2131 |
| 28 | 2287 |
| 29 | 2371 |
| 30 | 2383 |
| 31 | 2521 |
| 32 | 2593 |
| 33 | 2833 |
| 34 | 2857 |
| 35 | 3163 |
| 36 | 3181 |
| 37 | 3253 |
| 38 | 3319 |
| 39 | 3571 |
| 40 | 3583 |
| 41 | 3697 |
| 42 | 3853 |
| 43 | 3919 |
| 44 | 3967 |
| 45 | 4003 |
| 46 | 4021 |
| 47 | 4201 |