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 | 14 |
| 2 | 196 |
| 3 | 450 |
| 4 | 2514 |
| 5 | 11950 |
| 6 | 49122 |
| 7 | 240346 |
| 8 | 1128862 |
| 9 | 4877154 |
| 10 | 23327018 |
| 11 | 108074514 |
| 12 | 478733418 |
| 13 | 2262096566 |
| 14 | 10409692914 |
| 15 | 46789327172 |
| 16 | 219235503298 |
| 17 | 1005810194939 |
| 18 | 4561769370045 |
| 19 | 21244661132558 |
| 20 | 97362267362778 |
| 21 | 444028822734414 |