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 | 3 |
| 2 | 5 |
| 3 | 33 |
| 4 | 35 |
| 5 | 53 |
| 6 | 55 |
| 7 | 333 |
| 8 | 335 |
| 9 | 353 |
| 10 | 355 |
| 11 | 533 |
| 12 | 535 |
| 13 | 553 |
| 14 | 555 |
| 15 | 3333 |
| 16 | 3335 |
| 17 | 3353 |
| 18 | 3355 |
| 19 | 3533 |
| 20 | 3535 |
| 21 | 3553 |
| 22 | 3555 |
| 23 | 5333 |
| 24 | 5335 |
| 25 | 5353 |
| 26 | 5355 |
| 27 | 5533 |
| 28 | 5535 |
| 29 | 5553 |
| 30 | 5555 |
| 31 | 33333 |
| 32 | 33335 |
| 33 | 33353 |
| 34 | 33355 |
| 35 | 33533 |
| 36 | 33535 |
| 37 | 33553 |
| 38 | 33555 |
| 39 | 35333 |
| 40 | 35335 |
| 41 | 35353 |
| 42 | 35355 |
| 43 | 35533 |
| 44 | 35535 |