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 | 44 |
| 2 | 88 |
| 3 | 1212 |
| 4 | 1616 |
| 5 | 2020 |
| 6 | 2424 |
| 7 | 2828 |
| 8 | 3232 |
| 9 | 3636 |
| 10 | 4040 |
| 11 | 4444 |
| 12 | 4848 |
| 13 | 5252 |
| 14 | 5656 |
| 15 | 6060 |
| 16 | 6464 |
| 17 | 6868 |
| 18 | 7272 |
| 19 | 7676 |
| 20 | 8080 |
| 21 | 8484 |
| 22 | 8888 |
| 23 | 9292 |
| 24 | 9696 |
| 25 | 100100 |
| 26 | 104104 |
| 27 | 108108 |
| 28 | 112112 |
| 29 | 116116 |
| 30 | 120120 |
| 31 | 124124 |
| 32 | 128128 |
| 33 | 132132 |
| 34 | 136136 |
| 35 | 140140 |
| 36 | 144144 |
| 37 | 148148 |
| 38 | 152152 |
| 39 | 156156 |