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 | 8 |
| 2 | 23 |
| 3 | 55 |
| 4 | 123 |
| 5 | 267 |
| 6 | 571 |
| 7 | 1211 |
| 8 | 2555 |
| 9 | 5371 |
| 10 | 11259 |
| 11 | 23547 |
| 12 | 49147 |
| 13 | 102395 |
| 14 | 212987 |
| 15 | 442363 |
| 16 | 917499 |
| 17 | 1900539 |
| 18 | 3932155 |
| 19 | 8126459 |
| 20 | 16777211 |
| 21 | 34603003 |
| 22 | 71303163 |
| 23 | 146800635 |
| 24 | 301989883 |
| 25 | 620756987 |
| 26 | 1275068411 |
| 27 | 2617245691 |