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 | 5 |
| 4 | 9 |
| 5 | 11 |
| 6 | 12 |
| 7 | 21 |
| 8 | 31 |
| 9 | 45 |
| 10 | 60 |
| 11 | 67 |
| 12 | 89 |
| 13 | 109 |
| 14 | 651 |
| 15 | 1607 |
| 16 | 1903 |
| 17 | 2002 |
| 18 | 3037 |
| 19 | 3085 |
| 20 | 9579 |
| 21 | 9697 |
| 22 | 10638 |
| 23 | 14460 |