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 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 7 |
| 5 | 23 |
| 6 | 28 |
| 7 | 83 |
| 8 | 109 |
| 9 | 128 |
| 10 | 175 |
| 11 | 592 |
| 12 | 1136 |
| 13 | 2674 |
| 14 | 4991 |
| 15 | 26903 |
| 16 | 31571 |
| 17 | 55076 |
| 18 | 81020 |
| 19 | 122273 |