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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 10 |
| 5 | 14 |
| 6 | 72 |
| 7 | 100 |
| 8 | 139 |
| 9 | 518 |
| 10 | 1000 |
| 11 | 10000 |
| 12 | 13895 |
| 13 | 19307 |
| 14 | 26827 |
| 15 | 37276 |
| 16 | 100000 |
| 17 | 1000000 |
| 18 | 10000000 |
| 19 | 13894955 |
| 20 | 26826958 |
| 21 | 100000000 |
| 22 | 193069773 |
| 23 | 517947468 |
| 24 | 1000000000 |
| 25 | 1930697729 |
| 26 | 10000000000 |
| 27 | 100000000000 |
| 28 | 268269579528 |
| 29 | 1000000000000 |
| 30 | 3727593720315 |