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 | 2 |
| 3 | 5 |
| 4 | 10 |
| 5 | 19 |
| 6 | 31 |
| 7 | 54 |
| 8 | 77 |
| 9 | 108 |
| 10 | 155 |
| 11 | 206 |
| 12 | 274 |
| 13 | 356 |
| 14 | 458 |
| 15 | 579 |
| 16 | 715 |
| 17 | 884 |
| 18 | 1068 |
| 19 | 1270 |
| 20 | 1531 |
| 21 | 1805 |