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 | 7 |
| 5 | 13 |
| 6 | 22 |
| 7 | 40 |
| 8 | 70 |
| 9 | 126 |
| 10 | 225 |
| 11 | 411 |
| 12 | 746 |
| 13 | 1376 |
| 14 | 2537 |
| 15 | 4719 |
| 16 | 8799 |
| 17 | 16509 |
| 18 | 31041 |
| 19 | 58635 |
| 20 | 111012 |
| 21 | 210870 |
| 22 | 401427 |
| 23 | 766149 |
| 24 | 1465019 |
| 25 | 2807195 |
| 26 | 5387990 |
| 27 | 10358998 |
| 28 | 19945393 |
| 29 | 38458183 |
| 30 | 74248450 |
| 31 | 143522116 |
| 32 | 277737796 |
| 33 | 538038782 |
| 34 | 1043325197 |