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 | 7 |
| 3 | 13 |
| 4 | 25 |
| 5 | 37 |
| 6 | 53 |
| 7 | 53 |
| 8 | 83 |
| 9 | 119 |
| 10 | 261 |
| 11 | 477 |
| 12 | 955 |
| 13 | 615 |
| 14 | 1617 |
| 15 | 937 |
| 16 | 2447 |
| 17 | 5409 |
| 18 | 13829 |
| 19 | 9379 |
| 20 | 17547 |