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) |
|---|---|
| 0 | 4 |
| 1 | 8 |
| 2 | 86 |
| 3 | 148 |
| 4 | 540 |
| 5 | 1574 |
| 6 | 6344 |
| 7 | 14406 |
| 8 | 63836 |
| 9 | 24317046 |
| 10 | 1723718810 |
| 11 | 4303212632 |
| 12 | 59865566356 |
| 13 | 78575930302 |