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) |
|---|---|
| 0 | 2 |
| 1 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 14 |
| 6 | 22 |
| 7 | 30 |
| 8 | 44 |
| 9 | 60 |
| 10 | 84 |
| 11 | 112 |
| 12 | 154 |
| 13 | 202 |
| 14 | 270 |
| 15 | 352 |
| 16 | 462 |
| 17 | 594 |
| 18 | 770 |
| 19 | 980 |
| 20 | 1254 |
| 21 | 1584 |
| 22 | 2004 |
| 23 | 2510 |
| 24 | 3150 |
| 25 | 3916 |
| 26 | 4872 |
| 27 | 6020 |
| 28 | 7436 |
| 29 | 9130 |
| 30 | 11208 |
| 31 | 13684 |
| 32 | 16698 |
| 33 | 20286 |
| 34 | 24620 |
| 35 | 29766 |
| 36 | 35954 |
| 37 | 43274 |
| 38 | 52030 |
| 39 | 62370 |
| 40 | 74676 |
| 41 | 89166 |
| 42 | 106348 |
| 43 | 126522 |
| 44 | 150350 |
| 45 | 178268 |
| 46 | 211116 |
| 47 | 249508 |
| 48 | 294546 |
| 49 | 347050 |
| 50 | 408452 |