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 | 406 |
| 4 | 841 |
| 5 | 6235 |
| 6 | 46225 |
| 7 | 134160 |
| 8 | 389376 |
| 9 | 2189616 |
| 10 | 12313081 |
| 11 | 42602769 |
| 12 | 147403881 |
| 13 | 722705166 |
| 14 | 3543344676 |
| 15 | 13461507270 |
| 16 | 51141561025 |
| 17 | 233619318395 |
| 18 | 1067194368601 |
| 19 | 4261393225856 |
| 20 | 17016087003136 |
| 21 | 74907424036224 |