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 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 14 |
| 5 | 38 |
| 6 | 98 |
| 7 | 344 |
| 8 | 22268 |
| 9 | 79808 |
| 10 | 187124 |
| 11 | 347978 |
| 12 | 2171618 |
| 13 | 4219797674 |
| 14 | 98059918334 |
| 15 | 22518029924768 |
| 16 | 54420534706118 |
| 17 | 252534792143648 |