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 | 22 |
| 3 | 44 |
| 4 | 66 |
| 5 | 88 |
| 6 | 220 |
| 7 | 242 |
| 8 | 264 |
| 9 | 286 |
| 10 | 440 |
| 11 | 462 |
| 12 | 484 |
| 13 | 660 |
| 14 | 682 |
| 15 | 880 |
| 16 | 2002 |
| 17 | 2024 |
| 18 | 2046 |
| 19 | 2068 |
| 20 | 2200 |
| 21 | 2222 |
| 22 | 2244 |
| 23 | 2266 |
| 24 | 2288 |
| 25 | 2420 |
| 26 | 2442 |
| 27 | 2464 |
| 28 | 2486 |
| 29 | 2640 |
| 30 | 2662 |
| 31 | 2684 |
| 32 | 2860 |
| 33 | 2882 |
| 34 | 4004 |
| 35 | 4026 |
| 36 | 4048 |
| 37 | 4202 |
| 38 | 4224 |
| 39 | 4246 |
| 40 | 4268 |
| 41 | 4400 |
| 42 | 4422 |
| 43 | 4444 |
| 44 | 4466 |
| 45 | 4488 |
| 46 | 4620 |