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) |
|---|---|
| 4 | 11 |
| 5 | 41 |
| 6 | 108 |
| 7 | 246 |
| 8 | 517 |
| 9 | 1035 |
| 10 | 2010 |
| 11 | 3828 |
| 12 | 7199 |
| 13 | 13429 |
| 14 | 24920 |
| 15 | 46090 |
| 16 | 85065 |
| 17 | 156791 |
| 18 | 288758 |
| 19 | 531528 |
| 20 | 978099 |
| 21 | 1799521 |
| 22 | 3310404 |
| 23 | 6089406 |
| 24 | 11200845 |
| 25 | 20602307 |
| 26 | 37894354 |
| 27 | 69699452 |
| 28 | 128198215 |
| 29 | 235794285 |
| 30 | 433694384 |
| 31 | 797689490 |
| 32 | 1467180945 |
| 33 | 2698567791 |
| 34 | 4963441390 |