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 | 2 |
| 2 | 4 |
| 3 | 19 |
| 4 | 29 |
| 5 | 114 |
| 6 | 172 |
| 7 | 667 |
| 8 | 1005 |
| 9 | 3890 |
| 10 | 5860 |
| 11 | 22675 |
| 12 | 34157 |
| 13 | 132162 |
| 14 | 199084 |
| 15 | 770299 |
| 16 | 1160349 |
| 17 | 4489634 |
| 18 | 6763012 |
| 19 | 26167507 |
| 20 | 39417725 |
| 21 | 152515410 |
| 22 | 229743340 |
| 23 | 888924955 |
| 24 | 1339042317 |
| 25 | 5181034322 |
| 26 | 7804510564 |
| 27 | 30197280979 |
| 28 | 45488021069 |
| 29 | 176002651554 |
| 30 | 265123615852 |