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 | 5 |
| 2 | 13 |
| 3 | 61 |
| 4 | 181 |
| 5 | 349 |
| 6 | 421 |
| 7 | 661 |
| 8 | 829 |
| 9 | 1453 |
| 10 | 1621 |
| 11 | 1669 |
| 12 | 2029 |
| 13 | 2269 |
| 14 | 3469 |
| 15 | 3853 |
| 16 | 4021 |
| 17 | 4093 |
| 18 | 4261 |
| 19 | 4789 |
| 20 | 6781 |
| 21 | 6829 |
| 22 | 6949 |
| 23 | 7549 |
| 24 | 8221 |
| 25 | 8293 |
| 26 | 8821 |
| 27 | 9421 |
| 28 | 10069 |
| 29 | 10093 |
| 30 | 10141 |
| 31 | 10501 |
| 32 | 10861 |
| 33 | 12253 |
| 34 | 12613 |
| 35 | 13933 |
| 36 | 14389 |
| 37 | 14629 |
| 38 | 14869 |
| 39 | 16069 |
| 40 | 16189 |
| 41 | 16981 |
| 42 | 17389 |
| 43 | 17749 |