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 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 16 |
| 5 | 31 |
| 6 | 52 |
| 7 | 87 |
| 8 | 132 |
| 9 | 203 |
| 10 | 303 |
| 11 | 450 |
| 12 | 641 |
| 13 | 922 |
| 14 | 1287 |
| 15 | 1792 |
| 16 | 2446 |
| 17 | 3347 |
| 18 | 4488 |
| 19 | 6030 |
| 20 | 7975 |
| 21 | 10538 |
| 22 | 13778 |
| 23 | 17987 |
| 24 | 23234 |
| 25 | 29980 |
| 26 | 38383 |
| 27 | 49015 |
| 28 | 62195 |
| 29 | 78766 |
| 30 | 99137 |
| 31 | 124560 |
| 32 | 155672 |
| 33 | 194158 |
| 34 | 241104 |
| 35 | 298780 |
| 36 | 368747 |
| 37 | 454276 |
| 38 | 557619 |
| 39 | 683132 |
| 40 | 834252 |
| 41 | 1016955 |