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 | 3 |
| 3 | 17 |
| 4 | 17 |
| 5 | 50 |
| 6 | 79 |
| 7 | 796 |
| 8 | 3687 |
| 9 | 7074 |
| 10 | 9098 |
| 11 | 95915 |
| 12 | 118514 |
| 13 | 133188 |
| 14 | 186305 |
| 15 | 209314 |
| 16 | 666015 |
| 17 | 5735240 |
| 18 | 7685979 |
| 19 | 11174747 |
| 20 | 97173279 |
| 21 | 269061009 |
| 22 | 569125952 |
| 23 | 932655002 |
| 24 | 7282946876 |
| 25 | 9919537325 |
| 26 | 52110120678 |
| 27 | 70254144261 |