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 | 0 |
| 2 | 1 |
| 3 | 8 |
| 4 | 11 |
| 5 | 88 |
| 6 | 101 |
| 7 | 111 |
| 8 | 181 |
| 9 | 808 |
| 10 | 818 |
| 11 | 888 |
| 12 | 1001 |
| 13 | 1111 |
| 14 | 1881 |
| 15 | 8008 |
| 16 | 8118 |
| 17 | 8888 |
| 18 | 10001 |
| 19 | 10101 |
| 20 | 10801 |
| 21 | 11011 |
| 22 | 11111 |
| 23 | 11811 |
| 24 | 18081 |
| 25 | 18181 |
| 26 | 18881 |
| 27 | 80008 |
| 28 | 80108 |
| 29 | 80808 |
| 30 | 81018 |
| 31 | 81118 |
| 32 | 81818 |
| 33 | 88088 |
| 34 | 88188 |
| 35 | 88888 |
| 36 | 100001 |
| 37 | 101101 |
| 38 | 108801 |
| 39 | 110011 |
| 40 | 111111 |
| 41 | 118811 |
| 42 | 180081 |