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 | 7 |
| 4 | 14 |
| 5 | 73 |
| 6 | 146 |
| 7 | 511 |
| 8 | 1022 |
| 9 | 293339 |
| 10 | 586678 |
| 11 | 2053373 |
| 12 | 4106746 |
| 13 | 21413747 |
| 14 | 42827494 |
| 15 | 149896229 |
| 16 | 299792458 |