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) |
|---|---|
| 2 | 1 |
| 3 | 5 |
| 4 | 13 |
| 5 | 27 |
| 6 | 53 |
| 7 | 101 |
| 8 | 189 |
| 9 | 351 |
| 10 | 649 |
| 11 | 1197 |
| 12 | 2205 |
| 13 | 4059 |
| 14 | 7469 |
| 15 | 13741 |
| 16 | 25277 |
| 17 | 46495 |
| 18 | 85521 |
| 19 | 157301 |
| 20 | 289325 |
| 21 | 532155 |
| 22 | 978789 |
| 23 | 1800277 |
| 24 | 3311229 |
| 25 | 6090303 |
| 26 | 11201817 |
| 27 | 20603357 |
| 28 | 37895485 |
| 29 | 69700667 |
| 30 | 128199517 |
| 31 | 235795677 |
| 32 | 433695869 |