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 | 15 |
| 3 | 58 |
| 4 | 126 |
| 5 | 475 |
| 6 | 1006 |
| 7 | 2036 |
| 8 | 4093 |
| 9 | 16006 |
| 10 | 32584 |
| 11 | 65402 |
| 12 | 130934 |
| 13 | 262095 |
| 14 | 524251 |
| 15 | 1048554 |
| 16 | 2097148 |