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 | 11 |
| 4 | 51 |
| 5 | 76 |
| 6 | 123 |
| 7 | 149 |
| 8 | 274 |
| 9 | 311 |
| 10 | 328 |
| 11 | 381 |
| 12 | 639 |
| 13 | 737 |
| 14 | 898 |
| 15 | 1156 |
| 16 | 9017 |
| 17 | 13200 |
| 18 | 18348 |
| 19 | 26388 |
| 20 | 30081 |