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 | 1 |
| 1 | 132 |
| 2 | 2307 |
| 3 | 14506 |
| 4 | 55797 |
| 5 | 161376 |
| 6 | 387607 |
| 7 | 817062 |
| 8 | 1563561 |
| 9 | 2777212 |
| 10 | 4649451 |
| 11 | 7418082 |
| 12 | 11372317 |
| 13 | 16857816 |
| 14 | 24281727 |
| 15 | 34117726 |
| 16 | 46911057 |
| 17 | 63283572 |
| 18 | 83938771 |
| 19 | 109666842 |
| 20 | 141349701 |
| 21 | 179966032 |
| 22 | 226596327 |
| 23 | 282427926 |
| 24 | 348760057 |
| 25 | 427008876 |
| 26 | 518712507 |
| 27 | 625536082 |
| 28 | 749276781 |