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 | 7 |
| 2 | 9 |
| 3 | 23 |
| 4 | 47 |
| 5 | 79 |
| 6 | 81 |
| 7 | 167 |
| 8 | 359 |
| 9 | 839 |
| 10 | 1367 |
| 11 | 1847 |
| 12 | 2207 |
| 13 | 2399 |
| 14 | 3719 |
| 15 | 5039 |
| 16 | 6561 |
| 17 | 7919 |
| 18 | 10607 |
| 19 | 11447 |
| 20 | 14639 |
| 21 | 16127 |
| 22 | 17159 |
| 23 | 19319 |
| 24 | 28559 |
| 25 | 29927 |
| 26 | 36479 |
| 27 | 44519 |
| 28 | 49727 |
| 29 | 54287 |
| 30 | 57119 |
| 31 | 66047 |
| 32 | 85847 |
| 33 | 97967 |
| 34 | 113567 |
| 35 | 128879 |
| 36 | 177239 |
| 37 | 196247 |
| 38 | 201599 |
| 39 | 218087 |
| 40 | 241079 |
| 41 | 273527 |