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) |
|---|---|
| 5 | 0 |
| 6 | 1 |
| 7 | 4 |
| 8 | 7 |
| 9 | 13 |
| 10 | 19 |
| 11 | 39 |
| 12 | 53 |
| 13 | 104 |
| 14 | 138 |
| 15 | 251 |
| 16 | 334 |
| 17 | 590 |
| 18 | 715 |
| 19 | 1353 |
| 20 | 1855 |
| 21 | 3659 |
| 22 | 5221 |
| 23 | 10484 |
| 24 | 14933 |
| 25 | 27491 |
| 26 | 35474 |
| 27 | 68816 |
| 28 | 97342 |
| 29 | 186405 |
| 30 | 265255 |