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 | 6 |
| 2 | 7 |
| 3 | 19 |
| 4 | 21 |
| 5 | 23 |
| 6 | 27 |
| 7 | 57 |
| 8 | 183 |
| 9 | 207 |
| 10 | 231 |
| 11 | 247 |
| 12 | 267 |
| 13 | 399 |
| 14 | 417 |
| 15 | 441 |
| 16 | 459 |
| 17 | 569 |
| 18 | 603 |
| 19 | 693 |
| 20 | 847 |
| 21 | 933 |
| 22 | 1107 |
| 23 | 1149 |
| 24 | 1197 |
| 25 | 1251 |
| 26 | 1581 |
| 27 | 1619 |
| 28 | 2061 |
| 29 | 2137 |
| 30 | 2139 |
| 31 | 2339 |
| 32 | 2643 |
| 33 | 2703 |
| 34 | 2743 |
| 35 | 2847 |
| 36 | 2987 |
| 37 | 3199 |
| 38 | 3447 |
| 39 | 3477 |
| 40 | 3641 |
| 41 | 3919 |
| 42 | 4241 |
| 43 | 4369 |
| 44 | 4599 |
| 45 | 4761 |
| 46 | 6647 |
| 47 | 6739 |
| 48 | 6831 |