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 | 22 |
| 3 | 66 |
| 4 | 202 |
| 5 | 222 |
| 6 | 282 |
| 7 | 434 |
| 8 | 454 |
| 9 | 474 |
| 10 | 494 |
| 11 | 555 |
| 12 | 595 |
| 13 | 838 |
| 14 | 858 |
| 15 | 969 |
| 16 | 1001 |
| 17 | 1551 |
| 18 | 1771 |
| 19 | 3333 |
| 20 | 3553 |
| 21 | 5335 |
| 22 | 6006 |
| 23 | 6226 |
| 24 | 6886 |
| 25 | 8778 |
| 26 | 9889 |
| 27 | 12921 |
| 28 | 14541 |
| 29 | 15051 |
| 30 | 16261 |
| 31 | 16761 |
| 32 | 17171 |
| 33 | 18681 |
| 34 | 19491 |
| 35 | 20202 |
| 36 | 20602 |
| 37 | 20802 |
| 38 | 20902 |
| 39 | 24142 |
| 40 | 24242 |
| 41 | 24542 |
| 42 | 28282 |
| 43 | 28482 |
| 44 | 30003 |