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 | 60 |
| 2 | 60 |
| 3 | 100 |
| 4 | 100 |
| 5 | 120 |
| 6 | 140 |
| 7 | 140 |
| 8 | 160 |
| 9 | 180 |
| 10 | 180 |
| 11 | 200 |
| 12 | 220 |
| 13 | 220 |
| 14 | 240 |
| 15 | 260 |
| 16 | 260 |
| 17 | 280 |
| 18 | 300 |
| 19 | 300 |
| 20 | 320 |
| 21 | 350 |
| 22 | 400 |