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 | 213 |
| 2 | 942 |
| 3 | 2956 |
| 4 | 7326 |
| 5 | 15447 |
| 6 | 29038 |
| 7 | 50142 |
| 8 | 81126 |
| 9 | 124681 |
| 10 | 183822 |
| 11 | 261888 |
| 12 | 362542 |
| 13 | 489771 |
| 14 | 647886 |
| 15 | 841522 |
| 16 | 1075638 |
| 17 | 1355517 |
| 18 | 1686766 |
| 19 | 2075316 |
| 20 | 2527422 |
| 21 | 3049663 |
| 22 | 3648942 |
| 23 | 4332486 |
| 24 | 5107846 |
| 25 | 5982897 |
| 26 | 6965838 |
| 27 | 8065192 |
| 28 | 9289806 |
| 29 | 10648851 |
| 30 | 12151822 |