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 | 2 |
| 3 | 18 |
| 4 | 58 |
| 5 | 1853 |
| 6 | 5853 |
| 7 | 1620578 |
| 8 | 485216058 |
| 9 | 1243473981 |
| 10 | 2747265466 |
| 11 | 595277030253 |
| 12 | 789599540493 |
| 13 | 2573455929746 |
| 14 | 48450258487106 |