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 | 4444 |
| 2 | 14444 |
| 3 | 24444 |
| 4 | 34444 |
| 5 | 40444 |
| 6 | 41444 |
| 7 | 42444 |
| 8 | 43444 |
| 9 | 44044 |
| 10 | 44144 |
| 11 | 44244 |
| 12 | 44344 |
| 13 | 44404 |
| 14 | 44414 |
| 15 | 44424 |
| 16 | 44434 |
| 17 | 44440 |
| 18 | 44441 |
| 19 | 44442 |
| 20 | 44443 |
| 21 | 44445 |
| 22 | 44446 |
| 23 | 44447 |
| 24 | 44448 |
| 25 | 44449 |
| 26 | 44454 |
| 27 | 44464 |
| 28 | 44474 |
| 29 | 44484 |
| 30 | 44494 |
| 31 | 44544 |