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 | 1 |
| 2 | 20 |
| 3 | 31 |
| 4 | 42 |
| 5 | 53 |
| 6 | 64 |
| 7 | 75 |
| 8 | 86 |
| 9 | 97 |
| 10 | 108 |
| 11 | 119 |
| 12 | 1200 |
| 13 | 1301 |
| 14 | 1402 |
| 15 | 1503 |
| 16 | 1604 |
| 17 | 1705 |
| 18 | 1806 |
| 19 | 1907 |
| 20 | 2008 |
| 21 | 2109 |
| 22 | 2210 |
| 23 | 2311 |
| 24 | 2412 |
| 25 | 2513 |
| 26 | 2614 |
| 27 | 2715 |
| 28 | 2816 |
| 29 | 2917 |
| 30 | 3018 |
| 31 | 3119 |
| 32 | 3220 |
| 33 | 3321 |
| 34 | 3422 |
| 35 | 3523 |
| 36 | 3624 |
| 37 | 3725 |
| 38 | 3826 |
| 39 | 3927 |
| 40 | 4028 |