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) |
|---|---|
| 3 | 7 |
| 4 | 12 |
| 5 | 37 |
| 6 | 62 |
| 7 | 187 |
| 8 | 312 |
| 9 | 937 |
| 10 | 1562 |
| 11 | 4687 |
| 12 | 7812 |
| 13 | 23437 |
| 14 | 39062 |
| 15 | 117187 |
| 16 | 195312 |
| 17 | 585937 |
| 18 | 976562 |
| 19 | 2929687 |
| 20 | 4882812 |
| 21 | 14648437 |
| 22 | 24414062 |
| 23 | 73242187 |
| 24 | 122070312 |
| 25 | 366210937 |
| 26 | 610351562 |
| 27 | 1831054687 |
| 28 | 3051757812 |
| 29 | 9155273437 |
| 30 | 15258789062 |