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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 23 |
| 6 | 46 |
| 7 | 61 |
| 8 | 215 |
| 9 | 652 |
| 10 | 821 |
| 11 | 2918 |
| 12 | 4201 |
| 13 | 6904 |
| 14 | 8402 |
| 15 | 48361 |
| 16 | 63556 |
| 17 | 86723 |
| 18 | 270131 |
| 19 | 441262 |
| 20 | 882425 |
| 21 | 2517902 |
| 22 | 4034914 |
| 23 | 6758401 |
| 24 | 8068838 |
| 25 | 23445533 |
| 26 | 46880176 |
| 27 | 61277761 |
| 28 | 219078635 |
| 29 | 654534862 |