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 | 5 |
| 2 | 9 |
| 3 | 55 |
| 4 | 59 |
| 5 | 95 |
| 6 | 99 |
| 7 | 555 |
| 8 | 559 |
| 9 | 595 |
| 10 | 599 |
| 11 | 955 |
| 12 | 959 |
| 13 | 995 |
| 14 | 999 |
| 15 | 5555 |
| 16 | 5559 |
| 17 | 5595 |
| 18 | 5599 |
| 19 | 5955 |
| 20 | 5959 |
| 21 | 5995 |
| 22 | 5999 |
| 23 | 9555 |
| 24 | 9559 |
| 25 | 9595 |
| 26 | 9599 |
| 27 | 9955 |
| 28 | 9959 |
| 29 | 9995 |
| 30 | 9999 |
| 31 | 55555 |
| 32 | 55559 |
| 33 | 55595 |
| 34 | 55599 |
| 35 | 55955 |
| 36 | 55959 |
| 37 | 55995 |
| 38 | 55999 |
| 39 | 59555 |
| 40 | 59559 |
| 41 | 59595 |
| 42 | 59599 |
| 43 | 59955 |
| 44 | 59959 |