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 | 3 |
| 3 | 7 |
| 4 | 10 |
| 5 | 28 |
| 6 | 36 |
| 7 | 67 |
| 8 | 81 |
| 9 | 147 |
| 10 | 483 |
| 11 | 643 |
| 12 | 1020 |
| 13 | 1900 |
| 14 | 2620 |
| 15 | 10453 |
| 16 | 27720 |
| 17 | 52824 |
| 18 | 105589 |
| 19 | 111988 |
| 20 | 618853 |
| 21 | 665829 |