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 | 7 |
| 4 | 9 |
| 5 | 27 |
| 6 | 59 |
| 7 | 69 |
| 8 | 181 |
| 9 | 201 |
| 10 | 257 |
| 11 | 267 |
| 12 | 399 |
| 13 | 573 |
| 14 | 603 |
| 15 | 861 |
| 16 | 901 |
| 17 | 923 |
| 18 | 1021 |
| 19 | 1133 |
| 20 | 1239 |
| 21 | 1251 |
| 22 | 1519 |
| 23 | 1589 |
| 24 | 1729 |
| 25 | 1863 |
| 26 | 1901 |
| 27 | 2541 |
| 28 | 3001 |
| 29 | 3017 |
| 30 | 3049 |
| 31 | 3243 |
| 32 | 4407 |
| 33 | 4481 |
| 34 | 5457 |
| 35 | 5839 |
| 36 | 5889 |
| 37 | 5919 |
| 38 | 6159 |
| 39 | 6201 |
| 40 | 6293 |
| 41 | 6577 |
| 42 | 6603 |
| 43 | 6969 |
| 44 | 7217 |
| 45 | 8131 |
| 46 | 8981 |
| 47 | 9033 |