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 | 2050 |
| 3 | 181246 |
| 4 | 4554746 |
| 5 | 57756371 |
| 6 | 473755052 |
| 7 | 2867080476 |
| 8 | 13850340492 |
| 9 | 56214660117 |
| 10 | 198578979742 |
| 11 | 626254969978 |
| 12 | 1796939330902 |
| 13 | 4759784085863 |
| 14 | 11772194010488 |
| 15 | 27434359794488 |
| 16 | 60688711622904 |
| 17 | 128214959758953 |
| 18 | 260009617974234 |
| 19 | 508294535087734 |
| 20 | 961379452201234 |
| 21 | 1764741869856955 |
| 22 | 3152422588924004 |
| 23 | 5492913065904980 |