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 | 101 |
| 2 | 121 |
| 3 | 212 |
| 4 | 232 |
| 5 | 323 |
| 6 | 343 |
| 7 | 434 |
| 8 | 454 |
| 9 | 545 |
| 10 | 565 |
| 11 | 656 |
| 12 | 676 |
| 13 | 767 |
| 14 | 787 |
| 15 | 878 |
| 16 | 898 |
| 17 | 989 |
| 18 | 1012 |
| 19 | 1210 |
| 20 | 1232 |
| 21 | 2101 |
| 22 | 2123 |
| 23 | 2321 |
| 24 | 2343 |
| 25 | 3212 |
| 26 | 3234 |
| 27 | 3432 |
| 28 | 3454 |
| 29 | 4323 |
| 30 | 4345 |
| 31 | 4543 |
| 32 | 4565 |
| 33 | 5434 |
| 34 | 5456 |
| 35 | 5654 |
| 36 | 5676 |
| 37 | 6545 |
| 38 | 6567 |
| 39 | 6765 |
| 40 | 6787 |
| 41 | 7656 |
| 42 | 7678 |
| 43 | 7876 |
| 44 | 7898 |
| 45 | 8767 |
| 46 | 8789 |
| 47 | 8987 |