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 | 490 |
| 4 | 1225 |
| 5 | 8575 |
| 6 | 60025 |
| 7 | 211680 |
| 8 | 746496 |
| 9 | 4078944 |
| 10 | 22287841 |
| 11 | 90968949 |
| 12 | 371294361 |
| 13 | 1833291198 |
| 14 | 9052000164 |
| 15 | 39384126042 |
| 16 | 171355430401 |
| 17 | 810254854919 |
| 18 | 3831293402161 |
| 19 | 17143608557024 |
| 20 | 76711252182016 |
| 21 | 355989323916384 |