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 | 444 |
| 2 | 1444 |
| 3 | 2444 |
| 4 | 3444 |
| 5 | 4044 |
| 6 | 4144 |
| 7 | 4244 |
| 8 | 4344 |
| 9 | 4404 |
| 10 | 4414 |
| 11 | 4424 |
| 12 | 4434 |
| 13 | 4440 |
| 14 | 4441 |
| 15 | 4442 |
| 16 | 4443 |
| 17 | 4445 |
| 18 | 4446 |
| 19 | 4447 |
| 20 | 4448 |
| 21 | 4449 |
| 22 | 4454 |
| 23 | 4464 |
| 24 | 4474 |
| 25 | 4484 |
| 26 | 4494 |
| 27 | 4544 |
| 28 | 4644 |
| 29 | 4744 |
| 30 | 4844 |
| 31 | 4944 |
| 32 | 5444 |
| 33 | 6444 |
| 34 | 7444 |
| 35 | 8444 |
| 36 | 9444 |
| 37 | 10444 |