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 | 0 |
| 3 | 1 |
| 4 | 11 |
| 5 | 49 |
| 6 | 17 |
| 7 | 115 |
| 8 | 473 |
| 9 | 31 |
| 10 | 791 |
| 11 | 1 |
| 12 | 29 |
| 13 | 11491 |
| 14 | 371 |
| 15 | 641 |
| 16 | 2167 |
| 17 | 19 |
| 18 | 119 |
| 19 | 23 |
| 20 | 3211 |
| 21 | 106537 |
| 22 | 77 |
| 23 | 431 |
| 24 | 2465 |
| 25 | 2069 |
| 26 | 5575 |