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 | 13 |
| 2 | 123 |
| 3 | 218 |
| 4 | 223 |
| 5 | 278 |
| 6 | 411 |
| 7 | 513 |
| 8 | 551 |
| 9 | 588 |
| 10 | 733 |
| 11 | 743 |
| 12 | 796 |
| 13 | 856 |
| 14 | 928 |
| 15 | 1168 |
| 16 | 1226 |
| 17 | 1263 |
| 18 | 1401 |
| 19 | 1533 |
| 20 | 1976 |
| 21 | 1981 |
| 22 | 2013 |
| 23 | 2096 |
| 24 | 2138 |
| 25 | 2241 |
| 26 | 2376 |
| 27 | 2556 |
| 28 | 2676 |
| 29 | 2703 |
| 30 | 3626 |
| 31 | 3703 |
| 32 | 3718 |
| 33 | 3971 |
| 34 | 4008 |
| 35 | 4121 |
| 36 | 4138 |
| 37 | 4163 |
| 38 | 4188 |
| 39 | 4211 |
| 40 | 4313 |
| 41 | 4423 |
| 42 | 4653 |
| 43 | 4656 |
| 44 | 4901 |
| 45 | 5018 |